One year later , bassist Marcin `` Martin '' Rygiel , 13 , joined the band . Decapitated released its first demo , `` Cemeterial Gardens '' , in 1997 and its second demo , `` The Eye of Horus '' , in 1998 .
Bassist Marcin `` Martin '' Rygiel joined the band a year later and they released their first demo , `` Cemeterial Gardens '' , in 1997 as well as their second demo , `` The Eye of Horus '' , in 1998 .