Adi Cristian Colceru also known as David Deejay (born December 10, 1980), is a DJ, producer and composer from Bârlad, Romania. He studied violin in school, but dropped his studies and began writing songs with the aid of a computer. After moving to Bucharest, he worked with several local producers, and in 2007 started with the hit single Sexy Thing. Colceru released four single records, all of them reaching the top 10 in radio rankings of Romania.