Sylwia Grzeszczak born 7.04.1989 in Poznan, Poland.
Polish pop singer, known for her performances with Liber.

As a child participated in the TV show: «Od przedszkola do Opola» She graduated the second degree of music school of M. Karlowicz in Poznan. She participated in the fourth season of Polish Idol. In 2004, she won first place in the final vocal competition «Dzrzwi do kariery» (eng: door to a career). She also won first place in contest of compose music to Ernest Brylle poem. In 2006 she was a guest in the sixth albumof Ascetoholix group.
In 21 November 2008 she realsed her first debut album called «Ona i On» (eng. She and He)