Sina Tayefi (born 19 June 1997), known professionally as LE SINNER, is a Persian singer, songwriter and rapper from Malmö, Sweden.

Sina studied fashion design at Drottning Blankas Gymnasium in Malmö, Sweden.

During high school, Tayefi frequented a recreational youth center with a recording studio in Malmö.

After graduating from high school, at age of 19 he started working on his music professionally and released his first ever single.

In May 2017, Tayefi graced the cover story of Swedish newspaper Sydsvenskan for his first exclusive interview.