Marilyn Manson-Tainted Love(Soft Cell)
My Way - Sex Pistols covering Sinatra
That was Sid Vicious cover not the Sex Pistols..
Ah, you got me there

but it's both.
First version (with the string orchestrate) Sid sang, Steve Jones plays guitar. So half of the pistols, lol. Originally on The Great Rock n Roll Swindle.
Later another version was on Sid Sings (the version without the strings). No other Pistols on that version.
The pistols also do a good cover of Stepping Stone by the Monkees, which is sort of funny because they were like the Monkees of punk. Sort of fake, prefab, some couldn't play instruments.