Okay, the others have offered you fine folk-ish people, so have something different: MIKA is a British singer who does a sort of postmodern bubblegum pop. His music is bright and cheery and catchy and makes me want to dance even when the lyrics go a little deeper, and I love his voice, and his videos are mesmerizingly gorgeous and campy as anything, and he himself is adorable and bouncy. I linked to the youtube channel; watch the videos, they are awesome, I suggest starting with Lollipop. You may also know him as the singer behind the Grace Kelly fanvid which was a hit in SGA fandom a few years back.