Rosegarden is not available for Windows but there are plenty of alternatives that runs on Windows with similar functionality. The best Windows alternative is LMMS, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 50 alternatives to Rosegarden and loads of them are available for Windows so hopefully you can find a suitable replacement. Other interesting Windows alternatives to Rosegarden are FL Studio (Paid), MuseScore (Free, Open Source), Reaper (Paid) and Ardour (Freemium, Open Source).
FL Studio (originally known as FruityLoops) is a full-featured Digital Audio Workstation (DAW) offering a complete range of professional tools for everything from audio editing and beat creation to advanced arrangement, composition, mixing and mastering.
Ardour is a hard disk recorder and digital audio workstation application. It runs on GNU/Linux, Mac OS X, and Windows. Ardour's intention is to provide digital audio workstation software suitable for professional use.
With TuxGuitar, you will be able to compose music using the following features Tablature editor Score Viewer Multitrack display Autoscroll while playing Note duration management Various effects (bend, slide, vibrato, hammer-on/pull-off) ...