chore: hello world sonic pi track

sonic_pi/chill_track.rb

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+# Simple Chill Groove for Sonic Pi
+# Paste/run directly in Sonic Pi or use run.sh in this folder to auto-play.
+
+use_bpm 96
+use_random_seed 1234
+
+# Chord progression: Am – F – C – G
+prog = (ring chord(:a3, :minor), chord(:f3, :major), chord(:c4, :major), chord(:g3, :major))
+
+# Master bar clock + shared progression
+live_loop :bar do
+  cue :bar
+  sleep 4
+end
+
+live_loop :progression do
+  sync :bar
+  set :chord, prog.tick
+end
+
+# DRUMS
+live_loop :kick do
+  sample :bd_haus, amp: 2
+  sleep 1
+end
+
+live_loop :snare do
+  sleep 1
+  sample :sn_dolf, amp: 1.2
+  sleep 1
+end
+
+live_loop :hats do
+  sample :drum_cymbal_closed, amp: 0.6, cutoff: 120
+  sleep 0.5
+end
+
+# MUSIC
+with_fx :reverb, room: 0.7, mix: 0.35 do
+  live_loop :bass do
+    sync :bar
+    c = get(:chord)
+    use_synth :tb303
+    r = c.first - 12
+    8.times do
+      play r, release: 0.12, cutoff: rrand(90, 130), res: 0.9, wave: 0, amp: 0.9
+      sleep 0.5
+    end
+  end
+
+  live_loop :pads do
+    sync :bar
+    c = get(:chord)
+    use_synth :prophet
+    play c, sustain: 3.5, release: 0.5, cutoff: 100, amp: 0.5
+  end
+
+  live_loop :melody do
+    sync :bar
+    use_synth :pluck
+    s = scale(:a4, :minor_pentatonic)
+    8.times do
+      play choose(s), amp: 0.5, release: 0.15, pan: rrand(-0.35, 0.35)
+      sleep 0.5
+    end
+  end
+end

sonic_pi/run.sh

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+#!/usr/bin/env bash
+
+set -euo pipefail
+
+# Headless Sonic Pi playback on Arch Linux only.
+# - Installs Sonic Pi from AUR (sonic-pi.git) if missing
+# - Starts the Sonic Pi server headlessly and evaluates the given .rb file
+# - Optional: --duration N to auto-stop after N seconds
+
+PATH="$HOME/.local/bin:$PATH"
+
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+TRACK_FILE="$SCRIPT_DIR/chill_track.rb"
+DURATION=""
+
+require_cmd() {
+  command -v "$1" >/dev/null 2>&1
+}
+
+install_arch_from_aur_git() {
+  # Build and install from AUR git repo directly (sonic-pi.git)
+  local AUR_URL="https://aur.archlinux.org/sonic-pi.git"
+  if [ "$EUID" -eq 0 ]; then
+    echo "Do not run the AUR build as root. Re-run this script as a regular user." >&2
+    return 1
+  fi
+  echo "Preparing to build Sonic Pi from AUR..."
+  # Common build deps that often are needed
+  sudo pacman -S --needed --noconfirm base-devel git cmake boost boost-libs qt6-base qt6-svg qt6-declarative qt6-tools ruby || true
+  local TMPDIR
+  TMPDIR=$(mktemp -d -t sonicpi-aur-XXXXXX)
+  echo "Using temp dir: $TMPDIR"
+  (
+    set -e
+    cd "$TMPDIR"
+    repo_name=$(basename "$AUR_URL" .git)
+    echo "Cloning $AUR_URL"
+    git clone "$AUR_URL"
+    cd "$repo_name"
+    makepkg -si --noconfirm
+  )
+}
+
+install_sonic_pi() {
+  echo "Installing Sonic Pi (if missing)..."
+  if require_cmd pacman; then
+    if require_cmd sonic-pi; then
+      echo "Sonic Pi is already installed."
+      return 0
+    fi
+    install_arch_from_aur_git
+    if ! require_cmd sonic-pi; then
+      echo "Sonic Pi installation failed via AUR." >&2
+      exit 1
+    fi
+  else
+    echo "This installer only supports Arch Linux (pacman)." >&2
+    exit 1
+  fi
+}
+
+# No sonic-pi-tool or pip logic; headless playback uses the built-in REPL only.
+
+find_repl() {
+  REPL_BIN=""
+  if [ -x "/opt/sonic-pi/bin/sonic-pi-repl.sh" ]; then
+    REPL_BIN="/opt/sonic-pi/bin/sonic-pi-repl.sh"
+  elif require_cmd sonic-pi-repl.sh; then
+    REPL_BIN="$(command -v sonic-pi-repl.sh)"
+  fi
+}
+
+# Start Sonic Pi headlessly using the built-in REPL only
+headless_play() {
+  find_repl
+  if [ -n "$REPL_BIN" ]; then
+    echo "Starting Sonic Pi REPL with track: $TRACK_FILE"
+    if [ -n "$DURATION" ]; then
+      "$REPL_BIN" "$TRACK_FILE" &
+      REPL_PID=$!
+      echo "REPL PID $REPL_PID; playing for $DURATION seconds..."
+      sleep "$DURATION" || true
+      echo "Stopping (TERM REPL to trigger graceful daemon exit)..."
+      kill -TERM "$REPL_PID" || true
+      wait "$REPL_PID" || true
+    else
+      exec "$REPL_BIN" "$TRACK_FILE"
+    fi
+    return 0
+  fi
+
+  echo "REPL script not found. Ensure Sonic Pi is installed from AUR (sonic-pi.git)." >&2
+  exit 1
+}
+
+usage() {
+  cat <<EOF
+Usage: $(basename "$0") [--file path/to/track.rb] [--duration SECONDS]
+
+Defaults:
+  --file      $TRACK_FILE
+  --duration  run until Ctrl+C
+  (headless only)
+EOF
+}
+
+parse_args() {
+  while [[ $# -gt 0 ]]; do
+    case "$1" in
+      -f|--file)
+        TRACK_FILE="$2"; shift 2 ;;
+      -d|--duration)
+        DURATION="$2"; shift 2 ;;
+      -h|--help)
+        usage; exit 0 ;;
+      *)
+        echo "Unknown argument: $1" >&2; usage; exit 1 ;;
+    esac
+  done
+}
+
+main() {
+  parse_args "$@"
+  if [ ! -f "$TRACK_FILE" ]; then
+    echo "Track file not found: $TRACK_FILE" >&2
+    exit 1
+  fi
+  install_sonic_pi
+  headless_play
+}
+
+main "$@"