Maciej Cieślak is a Polish musician, founder, singer and guitarist of the band Ścianka, music producer. He co-created the music projects Lenny Valentino, Kings of Caramel, Cieślak and Księżniczki, Niewolnicy Satna. He was nominated in the category "Producer of the Year" for the Fryderyki award in 2001. He has collaborated with Smolik, Bassisters Orchestra and took part in the audiovisual project Jacek Olter.