Many of today’s popular tunes are "written to track," meaning a producer makes a beat and then a songwriter listens to it and attempts to generate words that fit that beat. Industry people call this:.

People in the industry call it Mathematical Songwriting

Explanation:

It is called mathematical songwriting because songs are written in accordance with the order, structure, relation and rhythm of the beat. Songs produced by mathematical songwriting are captivating and go on to be commercially successful because they become popular on radio stations and streaming services.

the factors that the economies of the muslim empires prosper were:

1- land trade routes-located between three continents  

2- sea trade routes

trade contributed to the spread of muslim empires, and with that islamic culture led to a growing feeling of internationalism resulted in the transfer of technology, science, and other cultural forms.

answer; human capital;