Attaboy - Goat Rodeo Sessions (Chris Thile, Edgar Meyer, Yo-Yo Ma, Stuart Duncan)
This song just sounds like pure joy to me. The whole album is fantastic, but this song is especially wonderful.
Houdini - Foster The People
It's addicting. I'm not even sure why.
Beethoven's Piano Sonata 15, Op. 28 Allegro
(or pretty much any Beethoven Sonata)
Somebody to Love - Queen
Such greatness all wrapped up in here.
Neat Little Rows - Elbow
Honestly, play me anything by Elbow and I'll be enthralled. I love this band. I really do. [insert plug here for new album "Dead in the Boot. Ah!]
Chopin's Nocturne Op. 9, No. 2
Skinny Genes - Eliza Doolittle
Another one of those addicting earworms. I actually really don't like the music video because it strikes me as just to hipster and kitschy, but the song is so catchy.
Chinese Translation - M. Ward
This list could go on for forever, but let's end it with this awesome song by M. Ward. Mellow, light, "philosophy pop". Loveliness wrapped up in raspy-voiced goodness.