Original: In Singapore , Brunei , southern Thailand , and the southern Philippines it is called Bahasa Melayu '' Malay language '' , and in Indonesia it is generally called Bahasa Indonesia , '' Indonesian language '' , though Bahasa Nasional '' National Language '' and Bahasa Persatuan\/Pemersatu '' Unifying Language '' are also heard .
Simplified: Bahasa Melayu is the official language of Malaysia , Indonesia ( though they call it Bahasa Indonesia ) , and Brunei .