The works of Ādi Śaṅkarācārya

Chāndogyopaniṣadbhāṣyam

Verse 382

अथ यदि गीतवादित्रलोककामोभवति संकल्पादेवास्य गीतवादित्रे समु-त्तिष्ठतस्तेन गीतवादित्रलोकेन संपन्नोमहीयते ॥ ८ ॥

In plain words

Now, should he desire the realm of music and song, simply by his will songs and instruments appear, and through that realm of melody he finds his fulfillment and rejoices.

Close to the Sanskrit

Now if he desires the world of song and instruments, from his will alone his songs and instruments arise; by that world of song and instruments he is endowed and rejoices.