He gigged around Boston as a keyboardist and played in a wedding band. After playing with the 1970s era R&B band Tavares, Bhasker moved to New York on September 11, 2001. He toured with the jam band Lettuce and began focusing more on songwriting. One of his first productions was with neo soul singer Goapele, on her album Even Closer. Bhasker produced a song on rapper The Game's first album, The Documentary. Bhasker relocated to Los Angeles, in 2005. He got a job doing demos for songwriter Diane Warren. He began writing with Bruno Mars, and songwriter and executive Steve Lindsey served as their mentor. He played cover songs in a band with Mars around Los Angeles. Bhasker then began an association with rapper/producer Kanye West. Initially serving as a substitute keyboardist for West's Glow in the Dark Tour, West was impressed by Bhasker's musical ability, and hired him as his musical director. He was set to be the musical director for the cancelled, before going on to be the music director of Lady Gaga's The Monster Ball Tour. Bhasker collaborated on West's albums 808s & Heartbreak, My Beautiful Dark Twisted Fantasy and the Jay-Z/Kanye West collaboration album, Watch the Throne, including the songs "Welcome to Heartbreak". "Lift Off", and "Runaway". Bhasker received the Grammy Award for Best Rap Song for West's "All of the Lights", and the Jay-Z/Rihanna/Kanye West song "Run This Town". Bhasker's collaborations span multiple genres, including writing and production credits on Alicia Keys's 2009 album, The Element of Freedom, including the charting singles "Try Sleeping with a Broken Heart" and "Wait Til You See My Smile", and the album tracks, "Love Is Blind", and "Like the Sea". In 2009, Bhasker produced the songs "Free", "Zombie", and "Heaven" for Natalia Kills, and co-wrote and produced, "Nothing Lasts Forever", from her debut album, Perfectionist, under the alias 'Billy Kraven'. He worked on Beyoncé's "I Care", "Rather Die Young" and "Party" from her 2011 album 4 as a writer, musician and producer. Bhasker worked again with Alicia Keys on her 2012 album, Girl on Fire, on the singles "Girl on Fire", and "Tears Always Win". He has also worked on the hit singles "Just Give Me a Reason" by Pink, Lana Del Rey's "Summertime Sadness", and Emeli Sandé's "My Kind of Love". Bhasker served as lead producer and co-writer for the band Fun's 2012 album, Some Nights, for which he received the 2013Grammy Award for Song of the Year for the song "We Are Young". He was additionally nominated for Album of the Year, Record of the Year for "We Are Young", and Producer of the Year, Non-Classical. Bhasker co-wrote and co-produced Mark Ronson's single "Uptown Funk", which earned him a 2016 Grammy Award for Record of the Year. Additionally, he received the 2016 Grammy Award for Producer of the Year, Non-Classical for his achievements in producing that year, including work with Nate Ruess, Elle King, and Mikky Ekko.
