According to Osho, song and dance are inevitable at the ultimate consummation—but their modes differ: the devotee sings manifestly, dancing at the circumference in ecstatic abandon, while the knower’s song is unmanifest—a delicate inner smile, a dance at the center. Both reach the same nondual dissolution of I and Thou; only the expression of celebration varies.
Yes—both celebrate: the devotee sings and dances loudly; the knower smiles and dances inside.