There are multiple artists with this name: 1) Lion were a 1980s rock band best known for their The Transformers theme song from the 1986 animated movie of the same name.
A hard rock quartet, Lion was formed in 1983 after ex-Tytan vocalist Kal Swan (born Norman Swan) relocated from London to Los Angeles and teamed up with drummer Mark Edwards who had been in Steeler alongside Yngwie Malmsteen and '3rd Stage Alert'.
MUTEMATH is an alternative rock band which formed in New Orleans, LA, United States in 2003. They consist of Paul Meany (vocals, keytar, keyboards, samples), Roy Mitchell-Cárdenas (bass, percussion), Darren King (drums, samples), and Todd Gummerman (guitar, keyboards, backing vocals). Since MUTEMATH released its first EP in late 2004 and hit the road in 2005, their inherent nature has challenged limitations and expanded parameters.
There have been two Australian bands named Ironhide. Ironhide is a progressive metalcore band formed in Brisbane, Australia in 2009. Their debut album is now available. Spawned in Brisbane following their formation in 2009, set to stone in Adelaide in 2010 with James Balderstone (A Secret Death), and polished off in Umea in 2011 by Pelle Henericsson (Refused, Cult of Luna), 'Create/Collapse/Repeat' is ten utterly seething tracks now available for free download from http://ironhide.bandcamp.com/ .
Transformers score is composed by Steve Jablonsky, so please change your tags!
Also the name of a band...so get a life.