Sometimes , he would sing each vocal harmony part alone through multi-track tape .
Striving for perfection , Brian 's intricate vocal arrangements exercised the group 's calculated blend of intonation , attack , phrasing , and expression .
Sometimes , Brian would sing each vocal harmony part alone through multi-track tape .
Striving for perfection , Brian 's intricate vocal arrangements exercised the group 's calculated blend of intonation , attack , phrasing , and expression .