Vijñāna Bhairava Tantra 1.36

1.36

तन्त्र्यादिवाद्यशब्देषु दीर्घेषु क्रमसंस्थितेः । अनन्यचेताः प्रत्यन्ते परव्योमवपुर्भवेत् ॥३६॥

tantryādivādyaśabdeṣu dīrgheṣu kramasaṃsthiteḥ | ananyacetāḥ pratyante paravyomavapur bhavet

anuṣṭubh

— in the sounds of stringed and other instruments ; — prolonged ; — owing to the gradual abiding (in them) ; — with mind one-pointed (not turned elsewhere) ; — at the end (of the sound) ; — one becomes embodied as the supreme void

In the long-drawn sounds of stringed and other instruments, established successively, one whose mind is one-pointed becomes, at the very end, the body of the supreme sky.