Os Tincoãs Were A Brazilian Popular Music Band From Bahia Primarily Active In The 1960s And 1970s. They Are Named After The Tincoã Bird A Subspecies Of The Squirrel Cuckoo Native To Brazil. Surviving Member Mateus Aleluia Is Still Very Active In Singing And Songwriting. Tincoãs Were Mateus Alelulia Heraldo Dadinho.