Shellesha

"Shellesha" is a songwriting partnership between British recording artists Alesha and Shell Ruin. It is one of the best-known and most successful musical collaborations in history. Between 2007 and 2010, Alesha and Shell Ruin collaborated on writing and producing dozens of hit singles for other artists as well as themselves.

Alesha initially contributed to Ruin's second and third studio albums Kill Pop and The Dirty Is Done in 2007. The pair collaborated on the "Power Power" EP the same year, sharing songwriting credits for the first time. Ruin later contributed five songs to Alesha's fifth studio album The Second Is Coming (2008), whie the pair co-wrote "Smoking Gun (Fuckery)." Unlike many songwriting partnerships that comprise separate lyricist and composer, both Alesha and Ruin wrote words and music. Sometimes, especially early on, they would collaborate extensively when writing songs, working "eyeball to eyeball". Later, it became more common for one of the two credited authors to write most of a song with limited input from the other.

Alesha and Shell Ruin collaborated extensively to write and produce Emily Henning's third studio album Only Human (2009) in its entirety. Other famous "Shellesha" collaborations that were neither recorded by Alesha nor Shell Ruin include Jack Stevens' "The Siren's Call."

Both members of the songwriting team also wrote and produced many tracks individually.