Embryonic is the twelfth studio album by experimental rock band The Flaming Lips released on October 13, 2009 on Warner Bros. It is the first double album to be released by the band, announced during an interview with the band's frontman Wayne Coyne, Somewhere along the way it occurred to me that we should do a double album... Just this idea that you can weave a couple of themes into there and you can sprawl a little bit. Several other artists made contributions to various tracks on the album. German mathematician Dr. Thorsten Wörmann contributed to the track "Gemini Syringes", psychedelic rock band MGMT contributed to the song "Worm Mountain", and Karen O (lead singer of the alternative rock trio Yeah Yeah Yeahs) contributed to the songs "I Can Be a Frog" and "Watching the Planets." Karen O's contributions were recorded by Wayne Coyne over the phone.