The term 'low in pitch' can be described by the crossword solutions of BASS (4 letters), Bassy (5 letters), and DEEP (4 letters). BASS is a type of low-pitched instrument, usually played with a bow or plucked with the fingers. Bassy is an adjective used to describe a sound that is low in pitch and has a lot of BASS frequencies. DEEP is an adjective used to describe a sound that is low in pitch and has a lot of low frequencies.