The band's first album released in 2011 featuring Grass Effect's reggae roots in the fusion of roots reggae with soul and black pop. Songs like Just Keep Walking, The Essence, Share and Spiritualize set the tone for the new concept of reggae music presented by the band.
Grass Effect appeared as a reggae band in 2009, guided by the passion for the reggae heart beat of two musicians from the South brazil scene. André Luciano (Andread) who is a multi instrument player and musical producer has played in other bands as Os Subtropicais and Fruet e os Cozinheiros and is responsible for most part of the instrumental composition. Zumbira Silva is a composer, guitarrist and singer of Zumbira e os Palmares band and is responsible for most of the lyrics and vocal harmonies.