sentence: track listing personnel gal costa - vocals chiquinho de moraes - arrangement , piano jards macalé - arrangement lanny gordin - arrangement , guitar hélio oiticica - artwork claudio bertrami - bass norival ricardo d'angelo - drums manoel barenbein - production ary carvalhaes - recording engineer joão pereira - recording engineer miscellanea '' legal '' means '' nice '' ( or '' cool '' ) and it 's an analogy to the singer 's name , gal .