"Liebestraum(e)" by Franz Liszt.

OK, back to the classics: Franz Liszt wrote and published these three technically challenging piano soli in 1850 based on amorous poems by Uhland and Freiligrath. By far the best-loved one is the 3rd, subtitled "Notturno", about "mature and unconditional love". Three separate variations upon the same melody separated by fast and difficult cadenzas, it is a standard on most pianists' repertoires.

http://www.youtube.com/watch?v=Y4XEPdYO5mM

"Your Heart Has Changed Its Mind"

OK, more 60's: Neil Sedaka and Howard Greenfield co-wrote this poignant ballad in 1961. Sedaka recorded it on that same year but did not release in until 1978 on "The Many Sides Of Neil Sedaka", a compilation of his lesser-known songs and B-sides from '58 to '65. Jan and Dean's '62 cover was the B-side to their hit "Tennessee".

http://www.youtube.com/watch?v=jzwt4ZXBXaU&feature=results_video&playnext=1&list=PLD9448710A958B0B3

http://www.youtube.com/watch?v=w-xQCM4tljg&feature=results_video&playnext=1&list=PLA40877CFE6C0E213

http://www.youtube.com/watch?v=n-CaP7snr0g

"Why" by Frankie Avalon.

OK, back to the 50's (barely!): This Bob Marcucci/Peter DeAngelis composition sung by Philly-native Frankie Avalon topped the charts during the last week of December of '59, making it the last #1 hit single of the 50's. It was his 2nd and last #1 hit. Donny Osmond's '72 cover peaked at #13. Song? First #1 hit?
http://www.youtube.com/watch?v=TqjjUKu9t-8
http://www.youtube.com/watch?v=uEZJyfPkWCY

Answer: "Why" by Frankie Avalon. His first #1 hit was "Venus" (NOT to be confused with Kevin Meaney's version!).

"Let It Be" by The Beatles.

OK, more Fabdom: This Macca composition is THE only Beatles tune in which Linda McCartney sang AND their first release in the Soviet Union (1972).