See Deryck Whibley perform In Too Deep with Avril Lavigne on her Greatest Hits tour

On a short break between shows on the band’s epic Tour Of The Setting Sum, Deryck Whibley has still been keeping busy – by joining Avril Lavigne onstage in Las Vegas over the weekend.

The two musicians – who were a couple of six-and-a-half years, and married for three of those – joined forces to perform the pop-punk heroes’ classic single In Too Deep at the MGM Grand Garden Arena on June 1, as part of Avril’s current Greatest Hits tour.

“Tonight we have a special guest, and he plays guitar in one of my favourite bands, and your favourite bands,” Avril said before the song. “Ladies and gentlemen, please give it up for Deryck from Sum 41!”

How wonderfully wholesome and cool. Watch fan-shot footage below:

And see the full setlist from the night:

1. Girlfriend
2. What The Hell
3. Complicated
4. Here's To Never Growing Up
5. Hot (snippet)
6. My Happy Ending
7. He Wasn't
8. Don't Tell Me
9. Losing Grip
10. When You're Gone
11. Fake As Hell (All Time Low cover – with All Time Low)
12. Bite Me
13. Love It When You Hate Me
14. In Too Deep (Sum 41 cover – with Deryck Whibley)
15. Sk8er Boi

Encore:

16. Head Above Water
17. I'm With You

Catch Sum 41 at Download, which takes place from June 14 – 16 at Donington Park. Get your tickets now.

You can also see Sum 41 live at Rock For People this summer – get your tickets here.

Check out the new Kerrang! x Sum 41 capsule collection