 Aside from the problems with H.R., who sometimes refused to perform at scheduled concerts and sessions, he and his younger brother, drummer Earl Hudson, also wanted to devote the band strictly to reggae, while Dr. Know and Darryl Jenifer were increasingly interested in heavy rock.H.R.experienced financial problems after an unsuccessful European tour with the group Human Rights and Bad Brains touring replacement singer Taj Singleton did not fit well with the band, so H.R.