Nostalgia, Ultra is the debut mixtape by American singer-songwriter Frank Ocean. It was released on February 16, 2011. Ocean was inspired to make the mixtape after Hurricane Katrina in his native New Orleans and his subsequent relocation to Los Angeles. After joining alternative hip hop group Odd Future in 2009, he self-released the mixtape, without initial promotion. Nostalgia, Ultra has a unique R&B aesthetic and features surreal themes and nostalgic lyrics. The songs mostly focus on interpersonal relationships, personal reflection, and social commentary. Following its release, the mixtape received rave reviews from music critics. The cover features a picture of a bright orange BMW E30 M3, Ocean's "dream car", in plain sight amidst lush greenery.

Frank Ocean is an American singer, songwriter, and rapper. His early works are credited by some music critics for pioneering the alternative R&B genre. Ocean has won two Grammy Awards and a Brit Award for International Male Solo Artist among other accolades, and his two studio albums have been listed on Rolling Stone's "500 Greatest Albums of All Time" (2020).