[4] He was the youngest participant in the Magic Mandolin Festival, (Germany), has performed at the Lincoln Centre, New York City, and has given concerts in BBC Live at London, Melbourne Concert Hall, Cité de la Musique, Paris,[3] Greece,[10] Canada,[11] Middle-East, United States,[12] and Europe.
[20][21] He has released solo albums, namely – Coromandel Duet (with A.K.Palanivel), Amalgamation, Vikku Vinayakaram, Spirits, Following My Heart and Into the Light.
[28][17][29] U. Rajesh has been involved in tours and recordings with many music artists in both North and South India, such as Ustad Zakir Hussain, Ustad Sultan Khan, Pandit Hariprasad Chaurasia, Shankar Mahadevan, Hariharan, Louis Banks, Ranjit Barot, Mike Marshall, Sivamani and Pete Lockett, Karsh Kale and Greg Ellis, Bickram Ghosh, Kamal Sabri, Niladri Kumar etc.
He started playing carnatic classical music on mandolin at the age of 6, and performed his first concert, at Kanchi Kamakoti Peetham in the presence of Shri.
[41][42] In 2018, as a part of what was widely considered as India's #MeToo movement, singer Chinmayi shared an account of a minor who was allegedly sexually harassed by Rajesh.