"2 On" is a song by American singer-songwriter Tinashe for her debut studio album Aquarius (2014). The song, which features a rap verse from American rapper SchoolBoy Q, was written by Tinashe, Schoolboy Q, Bobby Brackins, DJ Mustard, Jon Redwine, and Marley Waters. It features an interpolation of the 2005 single "We Be Burnin'" by Jamaican recording artist Sean Paul, resulting in writing credits for Cezar Cunningham, Sean Paul, Steven Marsden, Delano Thomas, Michael Jarrett, and Craig Serani Marsh. "2 On" was released as Tinashe's commercial debut single from Aquarius on January 21, 2014 and was sent to US rhythmic contemporary and urban contemporary radio on March 18, 2014.

"2 On" is an electro-R&B song that contains elements of trap production. Lyrically, the song is a party song about living life to the fullest. Music critics mostly praised the song for its sound and carefree lyrics, "2 On" was also noted by critics as a departure from Tinashe's murky alternative R&B that was heard in her previous work. The single peaked at number twenty four on the US Billboard Hot 100 and being certified platinum by the RIAA, the song also appeared on several commercial charts around the world, including Australia and Belgium.

An accompanying music video for the track was directed by Hannah Lux Davis and was released on March 24, 2014, with Tinashe dancing among several different scenes. To further promote the song Tinashe made various live performances including the SXSW Festival, the Power 106 LA concert, Capital Xtra, Rinse FM, V100.7/Milwaukee's Family Affair and The Wendy Williams Show. Canadian rapper Drake, released an unofficial rework of the song to his Soundcloud account, the song consists of two parts, the new version of "2 On" and "Thotful". An official Spanish remix featuring reggaeton singer Randy was released on November 18, 2014, included later on his mixtape Under Doxis.

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