|Born||5 May 1989|
|Years active||2005 - present|
Early life 
Kurt took his first singing audition when he was very young merely to join the school choir because he wanted to be with his friends. Years later he was chosen to sing in the children's choir during the last visit to Malta of his Holiness, Pope John Paul II. It was only in 2005 that Kurt took singing very seriously. In 2008 he moved to the UK for a year to work as an air steward. During this period in England, Kurt spent most of his free time studying the piano and performing in a number of small venues such as restaurants, bars and clubs. Back in Malta he started off as a backing vocalist on a television variety show and later as a solo singer on another family show on the national television station.
The Malta EuroSong 2010 
Calleja entered The GO Malta EuroSong 2010 with Priscilla Psaila with the song "Waterfall". The song qualified from its semi-final, however, the song finished in joint 12th place with 19 points in the final.
Malta Eurosong 2011 
Calleja again entered the Maltese national selection; Malta Eurosong 2011. Calleja's entry "Over and Over" qualified from the semi-final, the song finished in third place with 69 points in the final.
Malta Eurovision Song Contest 2012 
The song qualified from the second semi-final into the Eurovision final where it finished 21st.
- 2010 - "Waterfall" (with Priscilla Psaila)
- 2011 - "Over and Over"
- 2012 - "This is The Night"
- 2012 - "Boomerang"