I have to sing a song with an accompaniment track (piano recording that plays in the background while I sing). I want to listen to the voice recording of the same song to help me sing along with it, but with earbuds so no one else can hear the voice track. I want to play the accompaniment out loud and the voice track in my ears, but they MUST sync up exactly so each note is played/sung at the EXACT same time otherwise my singing will be out of tempo. How can I sync up the recordings that are on separate devices? I will play the accompaniment on a laptop and the voice track in my ears from my phone. HELP!

use an audio cable to either a mic or something else that is an input device, sync it to your computer an some sort of recording software, and boom

Explanation:

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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 !