Unexpected song collaborations that are ace

[Scout2016]

AIBU to ask for song recommendations where the song is ace but you wouldn't have imagined the artists hanging out together? Ideally a full on proper collaboration, not just featuring. So not Tom Petty and Stevie Nicks, who you'd expect to have been mates, or Metallica and Marianne Faithful because she just "la la la la"s along to a very much Metallica song.
I'll go Sinead O'Connor and Willie Nelson's "Don't Give Up" and Iggy Pop and Kate Pierson "Candy."

Kylie Minogue and Nick Cave is an unexpected combo, wouldn't say the song is ace though

Not sure how unexpected it would be classed as, but I've always liked Aerosmith/Run DMC's Walk this Way.

Easy Lover by Philip Bailey and Phil Collins

@Pelleas I would say that's unexpected.
@MrsSpenserGregson I am learning already because don't know who Philip Bailley is.

Marc Almond & Gene Pitney - Something's Gotten Hold of my Heart

Just remembered Micheal Jackson and Slash "Give In To Me"

@Pelleas I came on to write the exact same song! Phenomenal song and very unexpected.

Linkin Park and Jay Z entire collab album! But especially Numb/Encore

I love Stay by Rihanna and Mikky Ekko

Yes, isn't it, Spongebob? I saw them performing together on vintage TOTP a few weeks ago and was reminded of how good it was - back in the day I bought the single.

Billie Joe Armstrong from Greenday and Norah Jones did a whole collection of Everly Brothers covers... simply stunning.

Dido and Eminem “Stan” is a work of art. It’s still an amazing piece of music and I think even if it was released today it would be a huge hit again

I like Michael Hutchence and Jenny Mortis doing Jackson.

Morris. Jenny Morris.

Always loved Led Zep and Sandy Denny - The Battle of Evermore - she turns it from something very proto 'Spinal Tap' into something much better!

More recently, Lady Gaga and Florence Welch on 'Hey Girl'.

Both absolute tunes.

I was surprised to see Ed Sheeran and Eminem together on River but seeing as he now collaborates with anyone and everyone I guess not such a surprise.

Nick Cave and Shane McGowan - Wonderful World
m.youtube.com/watch?v=ynxKOLlqRhk

KLF and Tammy, yes! Loads I don't know. Can see I'm going to be hammering Google this evening.

A bit of an odd one but love the song

Anthrax and Public Enemy - Bring The Noise

Mel C and Bryan Adams - When you're Gone

@QuentinQuarantino

Both absolute tunes.

Dusty and PSB! yes! I listen to this a lot. Fabulous!

Peter Gabriel and Kate Bush - Don't Give Up

David Bowie and Bing Crosby!

@Ginfordinner now I would have expected them to be mates, being arty 70s/80s types.

Van Morrison and Cliff Richard - Whenever God Shines His Light