Łukasz Gottwald (born September 26, 1973), better known as Dr. Luke, is an American songwriter, record producer, and remixer. Luke performed with the Saturday Night Live Band for ten seasons until 2007. He has co-written and co-produced a string of commercially successful songs. He was named one of the top ten producers of the decade by Billboard in 2009, was awarded Producer of the Year and Songwriter of the Year awards in 2009 and won the Songwriter of the Year Award at the 2010 and 2011 American Society of Composers, Authors and Publishers (ASCAP) Pop Music Awards. Gottwald was also named both the Number One Hot 100 Songwriter of the Year and Number One Producer of the Year by Billboard. Among his biggest hits are the number one Billboard Hot 100 songs "Girlfriend", "I Kissed a Girl", "My Life Would Suck Without You", "Right Round", "Tik Tok", "California Gurls", "We R Who We R", "Teenage Dream", "E.T.", "Last Friday Night (T.G.I.F.)", "Part of Me", and "Hold It Against Me". He currently works with his team of producers including Ammo, Cirkut, Max Martin, Benny Blanco, and Billboard to produce tracks for a wide range of artists, including Kesha, Nicki Minaj, B.o.B, Rihanna, Adam Lambert, Taio Cruz, Katy Perry, and Cher Lloyd.