Oooooh Paramore! I would totally love to sing with them as well
I would also love to sing with Lady Gaga, especially her song: Edge of Glory. It's just one of the most beautiful songs I've ever heard. I fell in love at first sight (hearing) with the acoustic version.
Another one I'd love to duet with is The Maine, Perfectly Out of Key as I've told you before.
And, of course, Piano Man by Billy Joel <3
I hope you keep doing covers and sharing them Rhiss ^_^