T1E1T1R1A1C3H4O1R1D2S1
17 points
TETRACHORDS is validvalid
TETRACHORD, a musical chord with four notes [n]
TETRACHORD, a series of four sounds, forming a scale of two tones and a half [n]
TETRACHORD, a musical chord with four notes [n]
TETRACHORD, a series of four sounds, forming a scale of two tones and a half [n]