AutoBandStudio is an AI-powered composition and auto accompaniment generator designed for music creation. The tool automatically creates chord accompaniment, drums, bass, and guitar parts that match your input melody using artificial intelligence technology.

Key features include AI auto accompaniment generation that analyzes your melody to automatically generate natural chord progressions. The drum auto generation creates patterns for various genres like pop, ballad, and rock with direct editing capabilities allowing users to add, delete, and edit notes. Bass and guitar auto generation creates bass lines and guitar accompaniment based on predicted chords, with guitar supporting four patterns: whole note, half note, quarter note, and arpeggio. Users can generate accompaniment for specific sections by selecting notes while preserving existing accompaniment for partial editing.

The intuitive piano roll editor enables clicking to input notes, dragging to select multiple notes, and adjusting note length by dragging the right edge with zoom functionality from 0.25x to 4.0x using Ctrl + mouse wheel. Project save/load functionality allows saving projects as .abs files for Pro users, while free users have limited export capabilities. Per-track volume control enables individual adjustment for melody, accompaniment, drums, bass, and guitar tracks.

Benefits include flexible tempo control ranging from 40-240 BPM, various instrument options including piano, electric piano, classical guitar, and electric guitar. Flexible playback options allow adjusting speed from 0.25x to 4.0x with volume/mute/solo controls per track. File compatibility supports importing/exporting MIDI files and saving as WAV audio files, with convenient shortcuts like Ctrl+Z (undo), Ctrl+A (select all), Ctrl+C/V (copy/paste), Delete, and Shift (sustain).

The product targets music beginners using composition software for the first time, anyone wanting to create their own songs or ringtones, content creators making YouTube BGM or vlog music, those needing to quickly create demo tracks or beats, and users interested in MIDI-based composition and arrangement. The Windows application offers a freemium model with Pro subscription unlocking unlimited exports and commercial use.