Jessica Ellen Cornish, better known by her stage name Jessie J, is an English singer and songwriter. Citing various influences, Jessie J is recognised for an unconventional musical and performance style that mixes soul vocals with contemporary R&B, pop, electropop, and hip-hop beats. At the age of 16, Jessie began studying at the renowned BRIT School and graduated in the class of 2006 along with singers Adele and Leona Lewis. As for her stage name..."To be honest, thereâ€™s no real reason for the â€˜Jâ€™ in my stage name". Jessie J calls her fans "heartbeats", after her Heartbeat Tour. Apart from her powerful voice, Jessie J can also play keyboard.