Homophonic
Melody supported by chordal accompaniment
Monophonic
One melody line
Polyphonic
Several intertwining melody lines
Heterophonic
Two simultaneous versions of the same melody
Counterpoint
2 melody lines moving in opposite directions
Contrapuntal
2 melody lines moving in opposite directions
Thin
Few parts
Thick
Many parts
Unison
All parts play exactly the same