Tom Lehrer: She's My Girl (concert live) (1959)

The first part of the video (my signature slide) is overlaid by (my best attempt at) the final bars of "National Anthem of Peru", which I played on my keyboard. [Sorry if I botched it up a bit.]
The main part of the song is one of Tom Lehrer's live performed songs, "She's My Girl". It is part of Tom's first published live performance album, "An Evening Wasted With Tom Lehrer". But I obtained the actual music from the box set, "The Remains of Tom Lehrer", which was released in 2000. Enjoy.
And the last part is the main theme of "The Phantom of the Opera", by Andrew Lloyd Webber. Simply the 'cherry on top', and my personal song.
Here's the description Tom Lehrer himself made about the two love songs on the album: "'She's My Girl' and 'The Masochism Tango' illustrate two archetypes of the love song."
Sorry I gave so much information about the music earlier. I don't want to get screwed by stupid WMG again. They are a bunch of arse-holes. And to make sure I am not screwed, have them read the following credits:
Recorded at SANDERS THEATRE, HARVARD UNIVERSITY, Cambridge, MA (3/20/59 & 3/21/59)
Produced by TOM LEHRER
Engineered by STEPHEN FASSET
From the album "An Evening Wasted With Tom Lehrer," Lehrer #TL-202-S (1959); Reissued as Reprise #R-6199 (1966)
"The Remains of Tom Lehrer" Compilation ℗ 2000 Warner Bros. Records Inc. & Rhino Entertainment Company.