2004–2008: Songwriting and album appearances

Harper has predominantly written songs for other artists, such as Christina Milian's "Peanut Butter & Jelly", Charlotte Church's "Moodswings (To Come at Me Like That)", Aretha Franklin's "Put You Up on Game", Pussycat Dolls' "Painted Windows" and Ciara's "Pucker Up". She was featured on Rasheeda's GA Peach on the track "Pack Ya Bags" and Timati's The Boss on the track "Sexy Bitch". Her 2008 song, "Kaboom" (with Lady Gaga) was recorded during their sessions with producer Jim Jonsin; the song remains unreleased.

Additional credits include Maino's "Don't Say Nothing," Three 6 Mafia's "Shake My," Ciara's "Kiss My Swag," and Trina's "Let them Hoes Fight". She has contributed to the film soundtrack of Phat Girlz (2006) with her song "Stronger", as well as Confessions of a Shopaholic (2009) with her song "Big Spender." Harper guest performed on Trina's 2010 song "Let Them Hoes Fight", which was co-produced by Lady Gaga (Gaga was the intended guest performer).

2009–2012: Diddy – Dirty Money

In 2009, Harper formed Diddy – Dirty Money, which included label boss Sean Combs and labelmate, former Danity Kane member Dawn Richard. The group's debut single, "Angels" was released in November 2009. It featured a posthumous guest appearance from the Notorious B.I.G., and its music video was directed by Hype Williams. The band's follow-up single, "Love Come Down" was released that same day, although it was ultimately omitted from the Last Train To Paris album.

On November 13, 2009, the song "Hurt" by the group was leaked; it was a demo which became known as "Loving You No More," and featured Drake. The group's third single, "Hello Good Morning" (featuring T.I.) was released on March 30, 2010. In November 2010, Harper and the group saw their furthest commercial success with the release of the album's fourth single "Coming Home" (featuring Skylar Grey), which peaked at number 11 on the Billboard Hot 100 and remains one of the best performing hip hop songs of that year. Its reception expedited the album's release in December of that year, and it peaked at number seven on the Billboard 200. Critical reviews were generally positive.^[4]

The group performed at the 2010 BET Awards, while they were nominated for the BET Award for Best Group. She co-wrote the song "Bionic" for Christina Aguilera, from her fourth studio album, Bionic (2010).

In 2012, the group disbanded. Harper then continued work on her solo career, releasing her debut solo mixtape, Chamber of Secrets in June of that year.

2012–present: Black Orchid, Love and Hip Hop: Atlanta

Kalenna released a mix-tape called Chamber of Diaries on February 13, 2012, free of charge, consisting of thirteen tracks. The mixtapes lead single, "Go To Work" was released in November 2011.

She was a recurring cast member in seasons 3 & 4 of Love & Hip Hop: Atlanta. During the span of the show, Kalenna released "Murder" and "Space and Time" on iTunes.

Studio albums

Mixtapes

As featured artist

As songwriter

Television