Complex sentence: A second pair of hi-hats was instead used in the usual ride cymbal position so that open handed/un-crossed arm playing was possible which also made for interesting pattern variations a crossed-handed player would normally find very difficult and sometimes even impossible to play.
Split into simpler sentences: A second pair of hi-hats was instead used in the usual ride cymbal position so that open handed/un-crossed arm playing was possible. This arrangement also made for interesting pattern variations a crossed-handed player would normally find very difficult to play.