Drake at 2015 Hot 107.9 Birthday Concert

Drake performs onstage at Hot 107.9 Birthday Bash Block Show at Phillips Arena on June 20, 2015 in Atlanta.

Paras Griffin/Getty Images

As part of Billboard's annual Moneymakers ranking of music's top earning artists, we are breaking out the Top 10 in four revenue stream sources: Sales, Publishing, Streaming and Touring.

Streaming is the primary revenue driver of the record business these days, and hitting its moving target is no easy task. Leave it to Drake, he of lint roller business-savvy, to dominate a nascent and mercurial revenue stream.

Taylor Swift Tops Billboard's Top Money-Makers List of 2015

This article originally appeared in the May 14 issue of Billboard.