diff --git a/.gitignore b/.gitignore
index c87d8b5..5bedefd 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,3 +5,4 @@ public/
 .claude/
 *.tsbuildinfo
 .vercel
+dist
diff --git a/README.md b/README.md
index ec229ec..60e246c 100644
--- a/README.md
+++ b/README.md
@@ -102,6 +102,8 @@ npx vercel blob put \
   --content-type audio/mpeg
 ```
 
+If you need to test or debug the production configuration locally, you can run `npx vercel dev`. This will run the Vercel CLI's dev server and use the function defined in `/api/samples/list.tsx`, which will refer to the samples stored in Vercel Blob.
+
 ## Contributing
 
 Contributions are welcome! Please open an issue to get feedback on your idea before making a PR.
diff --git a/src/ui/components/SamplesSidebar.tsx b/src/ui/components/SamplesSidebar.tsx
index 2272c3d..f8e6d5f 100644
--- a/src/ui/components/SamplesSidebar.tsx
+++ b/src/ui/components/SamplesSidebar.tsx
@@ -1,9 +1,11 @@
+import { useAtom } from 'jotai'
 import { ChevronDown, Music } from 'lucide-react'
 import type * as Tone from 'tone'
 
 import { PLUGINS } from '@/src/lang/plugins'
 
 import type { SampleDetails } from '../load_samples'
+import { editorLanguageAtom } from '../state'
 import type { EditorLanguage } from './Editor'
 import { Collapsible, CollapsibleContent, CollapsibleTrigger } from './shadcn-ui/collapsible'
 import { useToast } from './shadcn-ui/hooks/use-toast'
@@ -38,6 +40,8 @@ export function SamplesSidebar({
   onLanguageChange: (value: EditorLanguage) => void
 }) {
   const { toast } = useToast()
+  const [editorLanguage] = useAtom(editorLanguageAtom)
+
   return (
     <Sidebar variant='floating'>
       <SidebarHeader>
@@ -68,7 +72,7 @@ export function SamplesSidebar({
           <SidebarGroupContent>
             <SidebarMenuItem>
               <Select
-                defaultValue='typescript' // TODO: use the default from the atom instead
+                value={editorLanguage}
                 onValueChange={(value: EditorLanguage) => {
                   onLanguageChange(value)
                 }}
diff --git a/src/ui/default_python.py b/src/ui/default_python.py
index c065730..8b76a61 100644
--- a/src/ui/default_python.py
+++ b/src/ui/default_python.py
@@ -1,59 +1,123 @@
 import json
 
-data = {
-    "bpm": 70,
-    "instruments": [
+# Welcome to 'Minuet', a multi-language live coding platform for the web.
+# You are now coding music in Python in the browser!
+#
+# Press Ctrl-Enter to start playback. Then modify the code as you like,
+# and then press Ctrl-Enter again to update the phrase-plan.
+#
+# Refresh the page or close the tab if you want to exit.
+#
+# Minuet will maintain a 4-bar loop. You can describe durations and
+# note placement according to the Tone.js Time definitions:
+# https://tonejs.github.io/docs/15.1.22/types/Unit.Time.html
+# For example, use "0:0:0" for the downbeat of the first bar,
+# and "1:2:0" for the *third* beat of the *second* bar - don't
+# forget about zero-indexing! The "bars:beats:sixteenths" syntax
+# can be used to describe both placements and durations.
+# You can also describe durations using syntax like
+# "8n" for an eighth note, "4n" for a quarter note, etc.
+#
+# You can find the source code or file an issue on GitHub:
+# https://github.com/jasongwartz/minuet
+
+bd = {
+    "sample": {"name": "kick.mp3"},
+    "on": [
+        f"{start + bar}:{beat}:{sub}"
+        for start in [0, 2]
+        for (bar, beat, sub) in [
+            (0, 0, 0),
+            (0, 1, 2),
+            (0, 3, 0),
+            (1, 1, 0),
+            (1, 2, 2),
+        ]
+    ],
+}
+
+sd = {
+    "sample": {"name": "snare.mp3"},
+    "on": [
+        f.format(i)
+        for i in range(0, 4)
+        for f in [
+            "{}:1:0",
+            "{}:3:0",
+        ]
+    ],
+}
+
+hh = {
+    "sample": {
+        "name": "hihat_loop.mp3",
+        "stretchTo": "2:0:0",
+    },
+    "on": ["0:0:0", "2:0:0"],
+}
+
+lead_synth = {
+    "synth": "AMSynth",
+    "on": [
         {
-            "sample": {
-                "name": "7_Drum_01_85bpm.wav",
-                "stretchTo": "4:0:0"
-            },
-            "on": [0],
-            "with": []
-        },
+            "notes": ["A4", "B4", "C5", "D5", "E5", "G5"],
+            "mode": "loop",
+            "beat": 0,
+            "duration": "16n",
+            "every": "16n",
+            "order": "random",
+            "octaveVariance": 2,
+        }
+    ],
+    "with": [
         {
-            "sample": {
-                "name": "Cymatics - Lofi Kick 5 - D#.wav"
+            "name": "hpf",
+            "value": {
+                "from": {
+                    "oscillator": "lfo",
+                    "period": "3:0:0",
+                    "min": "C4",
+                    "max": "C7",
+                }
             },
-            "on": [0, "1:0:0", "2:0:0", "3:0:0"],
-            "with": []
+        }
+    ],
+}
+
+bass_synth = {
+    "synth": "AMSynth",
+    "on": [
+        {
+            "notes": ["A1"],
+            "beat": 0,
+            "duration": "2:0:0",
+            "mode": "once",
         },
         {
-            "sample": {
-                "name": "Cymatics - Lofi Snare 6 - F#.wav"
-            },
-            "on": ["0:1:0", "0:3:0", "1:1:0", "1:3:0", "2:1:0", "2:3:0", "3:1:0", "3:3:0"],
-            "with": []
+            "notes": ["F1"],
+            "beat": "2:0:0",
+            "duration": "1:2:0",
+            "mode": "once",
         },
         {
-            "synth": "FMSynth",
-            "on": [
-                {"notes": ["C1"], "beat": 0, "duration": "0:3:0", "mode": "once"},
-                {"notes": ["G1"], "beat": "0:3:0", "duration": "4n", "mode": "once"},
-                {"notes": ["F1"], "beat": "1:0:0", "duration": "1:0:0", "mode": "once"},
-                {"notes": ["Bb1"], "beat": "1:3:0", "duration": "8n", "mode": "once"},
-                {"notes": ["B1", "C2"], "beat": "1:3:2", "duration": "16n", "mode": "once"},
-                {"notes": ["C1"], "beat": "2:0:0", "duration": "0:3:0", "mode": "once"},
-                {"notes": ["G1"], "beat": "2:3:0", "duration": "4n", "mode": "once"},
-                {"notes": ["F1"], "beat": "3:0:0", "duration": "1:0:0", "mode": "once"},
-                {"notes": ["Bb1"], "beat": "3:3:0", "duration": "8n", "mode": "once"},
-                {"notes": ["B1", "C2"], "beat": "3:3:2", "duration": "16n", "mode": "once"}
-            ],
-            "with": [
-                {
-                    "name": "lpf",
-                    "value": {
-                        "from": {
-                            "oscillator": "lfo",
-                            "min": "C2",
-                            "max": "C5",
-                            "period": "0:0:3"
-                        }
-                    }
-                }
-            ]
-        }
-    ]
+            "notes": ["D1"],
+            "beat": "3:2:0",
+            "duration": "0:2:0",
+            "mode": "once",
+        },
+    ],
+}
+
+
+data = {
+    "bpm": 105,
+    "instruments": [
+        bd,
+        sd,
+        hh,
+        lead_synth,
+        bass_synth,
+    ],
 }
 
 json.dumps(data)
diff --git a/src/ui/default_ts.ts b/src/ui/default_ts.ts
index 509323c..b3a33f0 100644
--- a/src/ui/default_ts.ts
+++ b/src/ui/default_ts.ts
@@ -12,64 +12,56 @@ const hhOff16s = Array(16)
   instruments: [
     {
       sample: {
-        name: 'Cymatics - Lofi Kick 5 - D#.wav',
+        name: 'kick.mp3',
       },
       on: bdQuarters,
     },
     {
       sample: {
-        name: 'Cymatics - Lofi Snare 6 - F#.wav',
+        name: 'hihat_loop.mp3',
       },
       on: hhOff16s,
-      // on: ['0:1:0', '0:3:0', '1:1:0', '1:3:0', '2:1:0', '2:3:0', '3:1:0', '3:3:0'],
     },
-    //    {
-    //      synth: "AMSynth",
-    //      on: [{ notes: ["C3", "Eb3", "F3", "Bb3"], beat: 0, duration: "32n", every: "32n", mode: "loop", octaveVariance: 0 }],
-    //      with: []
-    //    },
-    // {
-    //   synth: {
-    //     output: 3,
-    //     loopback: {
-    //       input: 'Minifuse 2',
-    //       channel: 'left',
-    //     },
-    //   },
-    //   on: [
-    //     { notes: ['C1'], beat: 0, duration: '0:3:0', mode: 'once' },
-    //     { notes: ['G1'], beat: '0:3:0', duration: '4n', mode: 'once' },
-    //     { notes: ['F1'], beat: '1:0:0', duration: '1:0:0', mode: 'once' },
-    //     { notes: ['Bb1'], beat: '1:3:0', duration: '8n', mode: 'once' },
-    //     { notes: ['B1', 'C2'], beat: '1:3:2', duration: '16n', mode: 'once' },
-    //     { notes: ['C1'], beat: '2:0:0', duration: '0:3:0', mode: 'once' },
-    //     { notes: ['G1'], beat: '2:3:0', duration: '4n', mode: 'once' },
-    //     { notes: ['F1'], beat: '3:0:0', duration: '1:0:0', mode: 'once' },
-    //     { notes: ['Bb1'], beat: '3:3:0', duration: '8n', mode: 'once' },
-    //     { notes: ['B1', 'C2'], beat: '3:3:2', duration: '16n', mode: 'once' },
-
-    //     //  { notes: ["C1", "Eb1", "F1", "Bb1"], beat: 0, duration: "32n", every: "16n", mode: "loop", octaveVariance: 0 }
-    //   ],
-    //   with: [
-    //     {
-    //       name: 'lpf',
-    //       value: {
-    //         from: {
-    //           oscillator: 'lfo',
-    //           min: 'C2',
-    //           max: 'C5',
-    //           period: '0:0:3',
-    //         },
-    //       },
-    //     },
-    //   ],
-    // },
-    //    {
-    //      external: {
-    //        input: "Minifuse 2",
-    //        channel: "left"
-    //      },
-    //      with: []
-    //    }
+    {
+      synth: 'AMSynth',
+      on: [
+        {
+          notes: ['C3', 'Eb3', 'F3', 'Bb3'],
+          beat: 0,
+          duration: '32n',
+          every: '32n',
+          mode: 'loop',
+          octaveVariance: 1,
+        },
+      ],
+    },
+    {
+      synth: 'AMSynth',
+      on: [
+        { notes: ['C1'], beat: 0, duration: '0:3:0', mode: 'once' },
+        { notes: ['G1'], beat: '0:3:0', duration: '4n', mode: 'once' },
+        { notes: ['F1'], beat: '1:0:0', duration: '1:0:0', mode: 'once' },
+        { notes: ['Bb1'], beat: '1:3:0', duration: '8n', mode: 'once' },
+        { notes: ['B1', 'C2'], beat: '1:3:2', duration: '16n', mode: 'once' },
+        { notes: ['C1'], beat: '2:0:0', duration: '0:3:0', mode: 'once' },
+        { notes: ['G1'], beat: '2:3:0', duration: '4n', mode: 'once' },
+        { notes: ['F1'], beat: '3:0:0', duration: '1:0:0', mode: 'once' },
+        { notes: ['Bb1'], beat: '3:3:0', duration: '8n', mode: 'once' },
+        { notes: ['B1', 'C2'], beat: '3:3:2', duration: '16n', mode: 'once' },
+      ],
+      with: [
+        {
+          name: 'lpf',
+          value: {
+            from: {
+              oscillator: 'lfo',
+              min: 'C2',
+              max: 'C5',
+              period: '0:0:3',
+            },
+          },
+        },
+      ],
+    },
   ],
 })
diff --git a/src/ui/default_yaml.yaml b/src/ui/default_yaml.yaml
index 643c44d..7c652fb 100644
--- a/src/ui/default_yaml.yaml
+++ b/src/ui/default_yaml.yaml
@@ -1,33 +1,12 @@
-bpm: 70
+bpm: 105
 instruments:
   - sample:
-      name: Cymatics - Lofi Kick 5 - D#.wav
-    on: ['0:0:0', '1:0:0', '2:0:0', '3:0:0']
-
+      name: kick.mp3
+    on: ['0:0:0', '0:1:2', '0:3:0', '1:1:0', '1:2:2', '2:0:0', '2:1:2', '2:3:0', '3:1:0', '3:2:2']
   - sample:
-      name: bbc_weather---_07038337.mp3
-      with: []
-    on: loop
-
+      name: snare.mp3
+    on: ['0:1:0', '0:3:0', '1:1:0', '1:3:0', '2:1:0', '2:3:0', '3:1:0', '3:3:0']
   - sample:
-      name: Cymatics - Lofi Hihat Loop 15 - 85 BPM.wav
-      stretchTo: '4:0:0'
-    on: [0]
-  - sample:
-      name: ellington trane in a sentimental mood intro.mp3
-      stretchTo: '2:0:0'
-    on: [0, '2:0:0']
-  - synth: FMSynth
-    on:
-      - notes: ['B2']
-        beat: 0
-        duration: '2:0:0'
-        mode: once
-      - notes: ['G1']
-        beat: '2:0:0'
-        duration: '1:2:0'
-        mode: once
-      - notes: ['E1']
-        beat: '3:2:0'
-        duration: '0:2:0'
-        mode: once
+      name: hihat_loop.mp3
+      stretchTo: 2:0:0
+    on: ['0:0:0', '2:0:0']
diff --git a/src/ui/state.ts b/src/ui/state.ts
index 53a3d65..0448507 100644
--- a/src/ui/state.ts
+++ b/src/ui/state.ts
@@ -28,4 +28,4 @@ export const schedulingStatusIndicatorAtom = atom<{
   text: '...',
 })
 
-export const editorLanguageAtom = atom<EditorLanguage>('typescript')
+export const editorLanguageAtom = atom<EditorLanguage>('python')