Sibelius is professional music arranging software for orchestration, stylistic score adaptation, and part management. Write in the master score while instrument parts update automatically via Dynamic Parts, keeping your entire ensemble perfectly in sync.
Orchestrate and arrange intuitively
Keep parts in sync
While composing, Sibelius synchornizes the master score and every instrument part automatically, eliminating repetitive edits across the arrangement.
Rework arrangements effortlessly
Swap instruments, transpose passages, and reshape orchestrations for new ensembles while keeping the arrangement intact.
Expand sketches to scores
Use Explode and Reduce to turn piano sketches into full orchestrations or condense ensembles into playable piano scores.
Format as you write
Magnetic Layout automatically adjusts spacing and prevents notation collisions as arrangements become more complex.
from sketch to orchestration
MIDI Import
Convert MIDI performances into editable notation to prepare arrangements for orchestration and scoring.
Advanced filtering
Isolate specific instrument groups like strings or brass to work on section writing without any clutter.
Ideas Library
Catalog and tag musical motifs or harmonic sketches to quickly drop them into new sections of your score.
Additional offerings
See how composers use Sibelius
Greg Spero
Composer (HalSey, Spirit fingers)
“Ideas come faster than we can get them on the page. Sibelius helps me optimize my workflow so I can get those ideas out faster than any other way.”
Antonio Teoli
Composer (NINTENDO, SEGA, SAMSUNG)
“When I heard about Sibelius mobile, I got really excited. Being able to go out, connect with nature, and create is an amazing improvement to your quality of life, creativity, soul, and mind.”
Move naturally from sketch to orchestration
Expand ideas across full ensembles while keeping every part connected to the score.

