it's called a quartet
it call a quartet
pro:per part det:art n
it's called a quartet .
ɪ t s WORD_BOUNDARY k ɔː l d WORD_BOUNDARY ɐ WORD_BOUNDARY k w ɔː ɹ t ɛ t WORD_BOUNDARY
i t ' s WORD_BOUNDARY c a l l e d WORD_BOUNDARY a WORD_BOUNDARY q u a r t e t WORD_BOUNDARY