who was singing that
who be sing that
pro:int aux part comp
who was singing that ?
h uː WORD_BOUNDARY w ʌ z WORD_BOUNDARY s ɪ ŋ ɪ ŋ WORD_BOUNDARY ð æ t WORD_BOUNDARY
w h o WORD_BOUNDARY w a s WORD_BOUNDARY s i n g i n g WORD_BOUNDARY t h a t WORD_BOUNDARY