g. big or insignificant) of the scale in use. Very simple classical items and several pop and traditional music tracks are prepared so that each one the music is in just one important. Much more sophisticated Classical, pop, and conventional music music and items could have two keys (and in some

A efficiency can either be planned out and rehearsed (practiced)—that is the norm in classical music, jazz big bands, and a lot of popular music variations–or improvised more than a chord progression (a sequence of chords), which happens to be the norm in tiny jazz and blues groups.