Question

Music that does not use repetitions, but instead uses newly composed music throughout is called

Answer 1

It is called Through-Composed.
Hope this helps.

Answer 2

Through Composed

Step-by-step explanation:

Through Composed (opposite, Strophic form) is a type of music that has different music for each stanza of the lyrics.

Each stanza has a new and different melody and thematic ideas which minimises melodic or thematic repetition in a given section of even entire piece of music.