to chant horses

Webster's Dictionary (GCIDE)

1.To make melody with the voice; to sing. "Chant to the sound of the viol." --Amos vi. 5. [1913 Webster]

2.(Mus.) To sing, as in reciting a chant. [1913 Webster]

To chant horses or To chaunt horses, to sing their praise; to overpraise; to cheat in selling. See Chaunter. --Thackeray. [1913 Webster]