What is your idea about the beginning of the universe

Discoveries in the early 20th century have suggested that the universe had a beginning and that space has been expanding since then, and is currently still expanding at an increasing rate. The Big Bang theory is the prevailing cosmological description of the development of the universe.

i'm not sure i completely understand your question, but i will do my best.

i think the answer you are looking for is sequence. (see below)

a repeated melodic fragment would be best defined as repetition, while repeated chords (different or the same) could be a chord progression. however, you then mentioned the chord and melodic fragment beginning on higher or lower pitches, in that case, the answer could be best defined as a sequence. the definition of a sequence is as follows: "the restatement of a motif or longer melodic (or harmonic) passage at a higher or lower pitch in the same voice."

let me know if this !