Simplify the following text for a Grade 3 native English-speaking person.
Original: Norton has been less active musically since HÃ 1\/4 sker DÃ 1\/4 's demise . Although never experiencing commercial success , HÃ 1\/4 sker DÃ 1\/4 influenced a number of later pop punk and alternative rock bands .
Simplified: HÃ 1\/4 sker DÃ 1\/4 always had more than one singer .