There are multiple artists under the name of "Momo".
1) True-school rapper from Bratislava - Petržalka, Slovakia . He is member of underground hip-hop group called Štrnásť, also know as XIV, or 14.
He have two solo albums, "Nepatrím medzi" (with all Štrnásť members), and "Stratená rovnováha". Third will be out soon..
https://www.facebook.com/M0M0SAM[ 2) A Japanese singer-songwriter. MOMO (桃井ひとみ, Momoi Hitomi) is a former member of I've Sound and is currently with P.O.R, a musical band she co-founded herself before joining I've.

Read more about Momo on Last.fm.