שִׁיר shir "song" used of both worship songs and profane music (e.g. drinking songs), Amos seems less than soothed by Israel's favorite musicians Am 5:23; 6:5 ("instruments of song") and so the judgment of 8:10.

שִׁירָה shira "song" a feminine form of the above, less common, in Am 8:3 the "temple songs" will only be wailed like dirges.