Oops!
From all these songs, I just know around 20. I'm aware I'm an illiterate in terms of music... I can tell you, however, there were some songs which are popular but were left behind...
Unchained Melody (The Righteous Brothers), Sounds of Silence (Simon and Garfunkel), What a Wonderful World (Louis Armstrong)... And more songs!!!
I have to say, however, that the choices of this 19-year-old boy were amazing!