MASM is a synthpop solo producer/singer/songwriter born in Maceió, Brazil and currently residing in São Paulo.

There is no attachment to a specific genre, and they are inspired by the sounds of current and not-so-current pop and electronic music trends and nostalgic video game music.

MASM has been producing and composing since 2015, when they released their first EP in collaboration with Phillipino singer/songwriter Xyh called "Pacing To". In 2016 they released their first album, "Mare Rasa", heavily inspired by Brazilian pop rock and synthpop trends of the time, followed by another album in 2020, "O Ano do Cachorro", featuring sounds inspired by 80s and 90s art pop and rock acts. Their most recent EP, Motelwave, released in 2022, features sounds inspired by electronic Brazilian music and vaporwave.

Since joining the furry fandom in 2020, they've also been hard at work composing and producing soundtracks for furry VNs, movies, and Youtube/Twitch Channels for furry creators such as Motfal, Jinxsis, Reed and Kaide, as well as DJing for venues such as BFF and VRFurs.