Studio software lets you develop musical ideas, turn them into finished songs and bring them to the stage. Many of them have included effects, instruments, sounds, and numerous features, you'll have everything you need to make any kind of music.
Record MIDI, physical instruments, vocals, or other audio, and use the softwares creative features to polish your performance, develop new ideas, or turn spontaneous moments into music.
Probably the best known softwares are made by Ableton ( Ableton Live ) and Steinberg ( Cubase ).