The best way to increase your Music Earning Rate is to earn from Boosters (Games, Offers, Surveys, Installs, Videos, News, Contests, Raffles, etc.). The more you earn from Boosters the higher your Music Earning Rate will be!
Boosters tab -
In addition, when you earn from Boosters you can earn Super Boosts! Super Boosts give you a short-term increase to your Music Earning Rate. Complete Boosters in a short period of time to earn a Super Boost.
Super Boost -