'Satheesraj Srithirukumar' (born June 17, 1984), better known by his stage name Kadhalviruz , is a Tamil singer, songwriter, rapper and record producer based in Germany who is stylistically attributed to the genre Tamil RnB. His debut single En Uyir Kadhale (Without You) was released in 2008 which reached number one Worldwide. 
 Kadhalviruz is the founder of the record label Kadhalviruz-Music, established in 2012.