Notes & Acknowledgements:
The numbered entries below refer to soundtracks. They follow the same sequence as presented in the video.

[1] “Memories of Blue” by Vangelis.

[2] “Now We Are Free” from "Gladiator".

Sources for [2]:
[a] https://www.youtube.com/watch?v=HwmT_Sskaek [secondary, adaptation by Lucas Mauro, 2013]
[b] https://www.youtube.com/watch?v=YQrf6r-9ozc&feature=youtu.be [primary, johneee9999, 2012]

Lyrics:
Anol shalom, Anol sheh lay konnud de ne um {shaddai}
Flavum, Nom de leesh, Ham de nam um das
La um de, Flavne. We de ze zu bu, We de sooo a ru
Un va-a pesh a lay, Un vi-I bee
Un da la pech ni sa (Aaahh), Un di-I lay na day, Un ma la pech a nay, Mee di nu ku
La la da pa da le na da na, Ve va da pa da le na la dumda (repeated 4x, fast tempo)

Anol shalom, Anol sheh ley kon-nud de ne um.
Flavum. Flavum. M-ai shondol-lee, Flavu… {Live on…}
Lof flesh lay, Nof ne, Nom de lis, Ham de num um dass
La um de, Flavne… Flay, Shom de nomm, Ma-lun des,
Dwondi, Dwwoondi, Alas sharum du koos, Shaley koot-tum.

Translation
Almighty freedom, almighty freer of the soul
Be free, walk with me through the golden fields
So lovely, lovely.

We regret our sins, but we sow our own fate and
Under my face I remain feeble, under my face, I smile (Aaah)
Even alone/afraid, under my face I will be waiting
Run with me now, soldier of Rome,
Run and play in the field with the ponies [x4, fast tempo]
Almighty freedom, almighty freer of the soul
Be free, be free and imagine, free with peace at last
It's lovely, it's lovely, this land
No one can believe or understand
How far I came just for my lovely family
I should have been there with them when the world crashed down
But now they rest with me.
I'll never forget how I felt that moment I became free.

[3] "Śvetāśvatara Upaniṣad" (Singer: Sharmila Roy)
From Peter Brook's "The Mahabharata".
[a] Source: https://www.youtube.com/watch?v=vjgfQl9OPYc

Lyrics:
Shrinvantu Vishwe Amritasya Putra ā ye dhāmāni divyāni tasthuḥ
Vedāhametaṃ puruṣaṃ mahāntamādityavarṇaṃ tamasaḥ parastāt
tameva viditvātimṛtyumeti nānyaḥ panthā vidyate'yanāya
Tameva viditvātimṛtyumeti nānyaḥ panthā vidyate'yanāya
Yaścāyamasminnākāśe tejomayo'mṛtamayaḥ puruṣaḥ

Translation:
Listen, you who dwell on the celestial planes, and you born of Amrit (immortality). I’ve awakened to that supreme Purusha (Brahma) who shines like the sun, End your ignorance of the Truth and abide in him. Know him and you’ll transcend death. This is the only way to attain/regain immortality.

[4] “Allah Amchu” (Singer: Sri Sathya Sai Baba),
from "Embodiments of Love" by Gianluca & Gabriele Ducros.
[a] https://www.youtube.com/watch?v=K-5vNZUc1I8
[b] http://www.premasound.com/web/index.php

Lyrics:
Allah Amchu Mahammadiulu
Jehova e Amchu Satchristavulu
Pullabjachnu Datamchu Vaishnavulu
Sambho Amchu Saivulu Sada

Prahladambuna Golva Andarikin Ayu Arogya
Sampada Labhambu Losangi Sam Rakshinchu
Devundu Okkade Amchu Abavimpudi

Translation:
Mohammedans would utter Allah
Christians would utter Jehovah
Vaishnavas would utter Vishnu
Shaivites would utter Shambo

When worshipped with joy,
God confers longevity and health,
As well as protects the devotee.
He is one only. Believe in this.

(Notes on J ī v a) From Wikipedia:
In Hinduism and Jainism, a jiva is a living being, or any entity imbued with a life force… (Sanskrit: जीव, jīva, alternative spelling jiwa; Hindi: जीव, jīv, alternative spelling jeev). The word itself originates from the Sanskrit jivás, with the root jīv- "to breathe". It has the same as the Latin word vivus, meaning "alive".

[5] "The Metta Chant" by Imee Ooi 慈经:黄慧音
“Metta” is a word in the Pali dialect spoken by Siddhartha Gautama Buddha, and it is defined as follows (Wikipedia):

“Mettā (Pali) or maitrī (Sanskrit) means benevolence, loving-kindness, friendliness, amity, good will, and active interest in others. It is the first of the four sublime states (Brahmavihāras) and one of the pāramīs [10 Perfections] of the Theravāda school of Buddhism." Metta chanting radiates loving-kindness to all sentient beings so that they may be well and happy.

[a] Source: Youtube video: https://www.youtube.com/watch?v=S5JAVk3Qwi8
[b] Pali Lyrics:
https://genius.com/Imee-ooi-the-chant-of-metta-pali-lyrics -
[c] Wikipedia article: https://en.wikipedia.org/wiki/Mettā

[6] "Prayer of the New Age" from "Set Free" by Constance Demby. https://www.youtube.com/watch?v=ihyYcArhihQ

[7] “Song for the World”, from "Earthbeat" by Paul Winter Consort + Dmitri Pokrovsky Singers.
[a] https://www.youtube.com/watch?v=Dvy-kZ-LlG0
[b] http://music.paulwinter.com/album/earthbeat