LS Jack are a Brazilian rock band from Rio de Janeiro formed in 1997. The founding lineup consisted of vocalist Marcus Menna, guitarist Sérgio Ferreira, bassist Vitor Queiroz, drummer Bicudo, keyboardist Sérgio Morel, and saxophonist Alessandro Barros. They released their eponymous debut studio album, LS Jack (1999), and followed it with the recordings Olho por Olho, Gente por Gente (2000) and V.I.B.E. (2002). The latter featured the track “Carla” (2002), which became one of the most played songs of the year in Brazil. After issuing the album Tudo Outra Vez (2003), Menna suffered a cardiac arrest in July 2004 following a surgical procedure. The group released the studio recording Jardim de Cores (2004) without promotion and became inactive. They attempted a brief return in 2005 with vocalist Fábio Allman and performed a reunion tour with Menna in 2010. In 2020, they resumed activity with the singer Vinny and released the extended play Volume 1 (2021). The ensemble promoted a tour for their 25th anniversary in 2022 before Vinny departed them in 2023.
