Adjective
through-composed (not comparable)
(music) Of a song, composed so that each stanza may have different music, rather than the same being repeated for all of them.
The game's tracks were composed of four-bar segments that could be rearranged dynamically in reaction to game events, with "melodies through-composed on top". Source: Internet
Operas were " through-composed ", with a continuous stream of music which in some cases eliminated all identifiable set-pieces. Source: Internet