Listen to the recitation of the 68th verse, second chapter of the Hatha Yoga Pradipika recited by Sukadev Bretz from Yoga Vidya in Germany. The Hatha Yoga Pradipika is written by Yogi Svatmarama:
अथ भ्रामरी
वेगाद् घोषं पूरकं भृङ्गनादं
भृङ्गीनादं रेचकं मन्दमन्दम् ।
योगीन्द्राण्?अम् एवम् अभ्यासयोगाच्
चित्ते जाता काचिद् आनन्दलीला ॥६८॥
If you want to recite along or just read the Sanskrit text (Devanagari and Roman Script), please check out Hatha Yoga Pradipika II 68.
Simplified transcription:
atha bhramari
vegad ghosham purakam bhringa nadam
bhringi nadam rechakam manda mandam |
yogindranam evam abhyasa yogach
chitte jata ka chid ananda lila ||68||