Most of the songs I listen to make me happy. I generally listen to whatever no matter what my mood.
Led Zeppelin, MGMT, Wolfmother, Mumm-ra, Chocolate Watchband, The Mamas & The Papas, The Doors, Pink Floyd, The Shins, The Velvet Underground, Donovan, Francoise Hardy, The Beach Boys, The Beatles, Adele, The Bright Eyes, Chopin, Grass Roots, Nirvana, Kimya Dawson, Beethoven, The Kinks, The Rolling Stones, Simon & Garfunkel, Third Eye Blind, The Zombies etc.