Across the Universe By The Beatles

Across the Universe" is a song by The Beatles that first appeared on a charity release in December 1969, and later, in modified form, on their final album, Let It Be. The song features John Lennon singing lead, who was also the primary composer (though, as with all Beatles songs written by either composer, the song is credited to Lennon/McCartney).
"Jai Guru Deva om" It was said in the beatles song "Across the Universe". Most simple translation is:
Om is just a sound. However a more detailed translation is:

"Jai" means "O Hail" or "Victory to"
"Guru" means "Teacher"
"Deva" means "God/Lord/Demi-God&q uot;
"om" some say is the source of all existence that comes from vibration

One night in 1967, the phrase "words are flowing out like endless rain into a paper cup" came to Lennon after hearing his then-wife Cynthia, according to Lennon, "going on and on about something". Later, after "she'd gone to sleep-- and I kept hearing these words over and over, flowing like an endless stream", Lennon went downstairs and it turned into sort of a cosmic song. He began to write the rest of the lyrics and when he was done, he went to bed and forgot about them.

In the morning, Lennon found the paper on which he had written the lyrics and took them down to his piano, where he began to play chords, and find pitches to match the words. The flavor of the song was heavily influenced by Lennon's and The Beatles' short-lived interest in Transcendental Meditation in late 1967–early 1968, when the song was composed. Based on this he added the mantra Jai guru deva om to the piece, which became the link to the chorus. The Sanskrit phrase is a sentence fragment whose words could have many meanings, but roughly translate to "hail to the divine guru", then the mystic syllable om.