Producing many sounds simultaneously
The technical term I think you're after is "polyphonic".
polyphonic
it is POLYPHONIC
Polyphonic means many sounds intertwining or interweaving.
Descant is an independent tune which is added to the main melody, thus producing a polyphonic texture
The polyphonic nature of the music was utterly lost on David.
No, Polyphonic
It isn't polyphonic - it's is monophonic: A melody accompanied by broken and arpeggiated chords virtually all the way through. Polyphonic means two separate voice lines playing against one another - that doesn't occur in Fur Elise.
You might be looking for the term polyphonic. Its basically the only term to describe the technique.
Gamelan music is basically polyphonic with a nuclear theme,an elaboration, a punctuation, a counter melody and a rhythm
In music, a piece which has interweaving melodic lines (lots of tunes weaving in and around each other) is said to show polyphony, or be polyphonic. Essentially, polyphonic is just another word for counterpoint.
That song is called "Light and Day." It's featured in Season 3, episode 19 - my choosiest choice of all. Not only is the song similar to the Polyphonic Spree, it IS the Polyphonic Spree!