“The knowledge of music becomes an effective means of attaining one-ness with Lord Shiva; for by the knowledge of music, one attains to a state of absorption and it is by attaining such a state that one-ness with Shiva could be obtained… One ought not to indulge, out of delusion, in worldly songs…”
Skanda Purana, Suta Samhita. 188.8.131.52-16
“To the yogin whose spirit attains a unified state in the uniform bliss engendered by delectation of objects like music, there occurs an absorption and anchoring of the mind in that bliss. Where there is a continuous and long flow of sounds from stringed instruments, one becomes freed of other objects of cognition and becomes merged in that ultimate and verily of the form of that Supreme Being.”
“We adore the Supreme Being of the form of sound (Nada Bramha) which is the one bliss without a second, and the light of consciousness in all beings that has manifested itself in the form of the universe. By the adoration of sound (Nada) are also adored God Bramha, Vishnu, and Maheshwara, for they are the embodiment of sound.”
Sharangadeva in Sangeet Ratnakara, 1.3.1-2
“One attains the Supreme Being by practicing continuously the chanting of the Samans (the sacred Vedic mantras set to music) in the prescribed manner and with mental concentration. The singing of the songs Aparanta, Ullopya etc… the songs composed by Daksha and Bramha, constitutes indeed liberation. One who knows the correct playing of the lute, has mastered the subtle semitones, and understands the rhythms, attains the path of liberation without any strain.”
Yajnavalkya Smriti, 3.4.112-15
“O Mind! The knowledge of the science and art of music bestows on a person the bliss of oneness with the Supreme Being. Music such as is accompanied by the blissful oceanlike stories of the Lord which are the essence of love and all the other sentiments blesses a person with oneness with the Lord. Music such as that cultivated by the discerning Thyagaraja bestows on a person affection (for fellow beings), devotion (to God), attachment to good men, the Lord’s Grace, austere life, mental concentration, fame, and wealth.”
Sangitajnanamu in raga Salagabhairavi by Thyagaraja
“O Mind! Drink and revel in the ambrosia of melody; it gives one the fruit of sacrifices and contemplation, renunciation, as well as enjoyment; Thyagaraja knows that they who are proficient in sound, the mysic syllable OM, and the music notes – which are all of the form of the Lord Himself – are liberated souls.”.
Ragasudharasa in raga Andolika by Thyagaraja
“Two Bramhana lutists are singing to the lute; this thing, the lute, is verily the embodiment of beauty and prosperity; and these musicians of the lute do verily endow him (the patron) with prosperity.”
Taittiriya Bramhana, 3.9.14
“These that sing to the lute indeed sing of Him (the Supreme Being) only; hence it is that they attain riches.”
Chandogya Upanishad 1.7.6.
“Whatever poetic utterances there are, and the songs in all their entirety, are aspects of Lord Vishnu, in his sonant form.”
Vishnu Purana. 1.22.84
Translations from: Sources of the Indian Tradition, Vol. I, Wm.Theodore de Barry Ed. 2nd edition, 1966. Columbia University Press, New York & London.