monophonic
One instruments
Homophonic
2 instruments
polyphonic
many instruments/ melodys
unison
singing/playing the same thing together
octaves
the interval between a key
call and response
here one musician offers a phrase and a second player answers with a direct commentary or response to the offered phrase.
alberti bass
a repeated accompaniment figure
Pedal
a note that is held through changing harmonies
Drone
a sustained tone
Counter melody
a different melody played at the same time
Bass line
The lowest line of a piece of music.