On February 18, 2011, Ocean released his first mixtape, Nostalgia, Ultra, to critical acclaim.[18][26] The mixtape focuses on interpersonal relationships, personal reflection and social commentary.[18] NPR's Andrew Noz said Ocean's songwriting is "smart and subtle...setting him apart from the pack."[27] Rolling Stone magazine's Jonah Weiner wrote that Ocean was a "gifted avant-R&B smoothie".[28] In April 2011, Ocean stated that his relationship with Def Jam strengthened since the release of the mixtape.[29] The mixtape made Ocean widely known and led to his collaborations with rappers Jay Z and Kanye West.[30] Ocean first appeared in Tyler, The Creator's music video for the single "She", from Tyler's second studio album Goblin (2011).[31][32] His first performance was in collaboration with Odd Future at the 2011 Coachella Valley Music and Arts Festival, where he later joined them for their first tour across the east coast of the United States.[33] On May 19, 2011 Ocean's record label Def Jam announced its plans to re-release Nostalgia, Ultra as an EP.[34] The single 'Novacane' was released to iTunes in May 2011, and the EP originally was set to be released the next month, but was delayed.[35][36]