Matsya Purana 274.43

274.43

japyāni sūktāni tathaiva caiṣāmanukrameṇāpi yathā svarūpam.
homāvasāne kṛtatūryyanādo gururgṛhītvā balipuṣpadhūpam.

Afterwards the mind should be turned to the mantras sacred to them At the close of the sacrifice when the Homas are over, the preceptors should get the music played and then taking the Valis, flowers and incense in order and invoke the Lokapals—41