Southbound is a Hiphop duo consisting of twin brothers, Sandman and Lowkey, hailing from Austin,Texas.
Southbound is also a jazz group based in London, UK, comprised of Jack Davies (trumpet), Rob Cope (tenor saxophone), Tom Taylor (piano) and Jon Ormston (drums). http://www.myspace.com/southboundjazz
Southbound is also a rock band based in São Paulo, Brasil, which consists of Otavio Cintra (bass and vocals), Luca Magli (guitar), Mariana Carvalho (keyboards) and Eduardo Freitas (drums)
Southbound can also refer to a metal band based in New Mexico which consists of Mitch Palacio (vocals, guitar), Marcos Majaloa (guitar), Oliver Main (Bass), and James Main (Percussion).