Magic Mary
There are several artists with name Holland:

1. Holland (홀랜드), born as Go Tae Seob (고태섭) on March 04, 1996 is a South Korean singer. He debuted on January 22, 2018 with the single "Neverland". He is the first openly gay idol to debut in the Korean music industry.

2. hollAnd is an avante-garde/indie singer/composer named Trevor Kampmann who aside from releasing over 9 releases since 1997 with the 'hollAnd' moniker, including 2010's dual full-lengths 'I BLOW UP' and 'SODIUM FAWN' on TeenBeat Records