Liam Sean "Skin" Tyson (born 7 September 1969 in Liverpool) is an English guitarist, best known as the lead guitarist for Cast. Tyson's first band, Pyramid Dream, gigged regularly around Liverpool in the late 1980s and early '90s. The band released one cassette album and appeared on compilation LP "One Summer In Liverpool". In 1991, the band toured Russia as part of a cultural exchange tour organised by Liverpool City Council. Tyson didn't contribute greatly to the compositions of this band, however his contribution lying in "total dedication to his instrument".