There are at least two artists named Matta ;
1) A British Electronic production duo:
Otherwise known as Andy & James, Matta joined forces in 2009 after meeting at Music College. Specialising in dance-floor orientated Bass Music, Matta have shaken up Parties and Festivals all over the world including prestigious Secret Garden Party and Maschinenfest, released on labels including Ad Noiseam, Black Butter, Boka, and Subway Records, are being supported by huge names such as Bjork, The Prodigy, Bastille & Laurent Garnier. They've had their music featured on TV ad campaigns for Audi and Childline and have already accumulated well over 2 Million YouTube & Vimeo views collectively, mainly for one particular hit release, ‘Release The Freq‘. They have also had their music featured on TV programmes such as 'Misfits' & 'So You Think You Can Dance'.
2) An indonesian rock band.