What elements are involved with songs

I want to store and write 开发者_如何转开发songs. Are songs all just pitch? If I stored only the pitch of each part of the song and apply the pitch to a bing sound and play it to replicate the song?

I'm very confused.

At minimum you will require a sequence of notes, which have a pitch and duration. This can be improved with chords and other types of polyphony, dynamics (volume or loudness), timbre, etc.

You should look into MIDI technology and related file formats for ideas about such a system, and a possible means for playing your songs on a computer.