MAMAMOO+ is the first official sub-unit from the South Korean girl group MAMAMOO. It consists of the rapper Moon Byul and vocalist Solar. 

The sub-unit debuted in 2022 with the single “BETTER” featuring South Korean rapper BIG Naughty.

Prior to their official debut, they released three singles as duets—“Like Yesterday” for the television program Two Yoo Project Sugar Man, “Bada Boom” for the survival show Street Dance Girls Fighter and an independent single, “Promise U.”