Feature Request: Advanced Pitch Shifting, More Export Formats, Import & Export JSON, and Copy-Paste Music Sheets

[TSFBCE24RhythmHeaveners]

Pitch Shifting Advanced: Extends the pitch shifting to 4 octaves.
Import & Export To JSON: Import & export JSON projects.
More Export Formats: Export your project into MP3, WAV, & AAC.
Copy-Paste patterns: Copies and pastes the selected pattern.