Cool Hipnoise is a Portuguese musical group. The band was formed in Lisbon in 1994 by Tiago Santos (guitar), João Gomes (keyboards), Paulo Muiños (saxophones), Nuno Reis (trumpet), Francisco Rebelo (bass) and Melo D (voice). Initially an acid jazz band, over the years its sound incorporated other influences like reggae and dub music. Among the artists that collaborated with the band are The Last Poets and Fernanda Abreu. Santos, Gomes and Rebelo, who remain the core of the group, have a side project named Spaceboys, with more pronounced electronic influences.