I was in the grocery store during a Christmas season a year or two ago, and realized that the Muzak was “Christmas is All Around,” the Christmas themed rip-off of “Love is All Around”–both of them hits of an fictional washed-up rocker in Love, Actually.
Oh man, thanks a lot! Earworms for hours now 
Can’t wait to hear the Muzak version of Spinal Tap’s ‘Break Like the Wind’
One of my friends claimed to have heard a Muzak version of Jethro Tull’s Aqualung. I’ve spent nearly 30 years wondering what that must be like.
Not quite the same but…
A college friend arranged ‘Crazy Train’ on a 6-string accoustic, having never heard the original. <or of Ozzy Osbourne, apparantly>
It was not bad, but funny as hell!
Hold on - “Love is All Around” wasn’t fictional - it was an actual song by The Troggs, of “Wild Thing” fame. Unless he was supposed to be in The Troggs - didn’t see the movie.
I don’t think I’ve heard muzak in the grocery store lately. The other day I heard “Rock Steady” by Whispers and had to fight the urge to dance in front of the imported beer shelf. 
It was a real hit for the Troggs in 1967 and for Wet Wet Wet in 1994 and covered several other times, including by R.E.M., before it was used in Love, Actually, in 2003.
It’s not exactly Muzak, but … there’s a Chinese group called “Twelve Girls Band” (there are, charmingly, thirteen of them). There’s really nothing quite like hearing Nessun Dorma played on traditional Chinese instruments. Er, with a rock backing. Strange but … interesting.
(To say nothing of other traditional Chinese staples like My Heart Will Go On. And more. I laughed so much after I heard Nessun Dorma that I bought the album.)
I had the negative (contra-positive?) experience. Realized that the Muzak string-schmaltz that was playing was John Lennon’s “Imagine”. Hmm. An impassioned plea for atheism… wafting through the Lutheran Old Fogies Home.
I work at Walgreens and I hear “Telstar” about twice a day. Gave me a jolt to hear it at the end of an episode of “Mad Men.”
I heard a bright and bouncy muzak rendition of “Timothy Leary’s Dead” from the Moody Blue’s “In Search of the Lost Chord” in an SF grocery store about 14 years ago… it struck me as especially odd because it was right after he actually died, too.
Or El Cóndor Pasa… I’m going through the whole smiley range right now listening to it!
I was eating lunch in a Miami hotel restaurant about 20 years ago, and barely noticed a strolling string combo in full Mariachi garb, performing among the tables. It only gradually dawned on me that they were playing ABBA’s “Fernando”. “Well, at least it’s Latin themed, sort of…” I thought.
Then they started in with “The Winner Takes It All”…
There’s a Hobby Lobby near me. Hobby Lobby is a craft store, but they are also the type of place which tells you on the door to the store that they are closed on Sunday so the employees may attend church.
Yesterday, I heard a song whose title I’m not sure of on what I think was a banjo–Nice traditional Christian Hymn, played slowly on a banjo.
It’s not the first time I’ve been there and suddenly recognized a tune and had that moment of “What? Muzak isn’t (usually) overtly Christian. Oh, yeah, Hobby Lobby’s Muzak often is.”
I’ve heard that in the grocery store.
I’ve had a couple of WTF Muzak moments lately.
In the Tuesday Morning store, I heard a sweet country girl singing Warren Zevon’s Jeannie Needs A Shooter (written with Bruce Springsteen). The lyrics were changed to accommodate her gender. It was just so unexpected.
In the grocery store last Sunday morning, among the well-dress fresh from church shoppers, I was walking down the paper goods aisle and who should come on but Tower of Power singing What Is Hip. Original song by original artist, and a favorite of mine, but I had to chuckle as I sang along to:
You became a part of a new breed.
Been smokin’ only the best weed.
When I went to Peru last yea, literally EVERY restaurant I ate in played apan flute version of Imagine. It was so funny to me, that I bought the CD off of some little street vendor.
My then-wife and I used to frequent a little Italian restaurant in Winston-Salem when we lived there and I said time and again it was the kind of place that made me feel like I was hearing the Godfather theme every time I went in there.
As we were getting ready to move to Charlotte, we decided to go there one last time.
Guess what played.
The version I heard when I looked this up on YouTube has him just singing the tenor part most of the time while a choir behind him sings the real thing. WTF is right. I mean, at least sing the melody line.
I’d never heard that tune before, and I can’t say I thought much of it. But the video was AWESOME!
I knew you’d be pleased.