Verse 41

तन्त्र्यादिवाद्यशब्देषु दीर्घेषु क्रमसंस्थितेः ।अनन्यचेताः प्रत्यन्ते परव्योमवपुर् भवेत्

In plain words

In the long sounds of stringed and other instruments, following them in their order with a mind on nothing else, at the very end you take the supreme sky as your body.