Simplify the following text for a Grade 6 native English-speaking person.
Original: Louder Than Love spawned the EP Loudest Love and the video compilation Louder Than Live , both released in 1990 . Bassist Ben Shepherd replaced previous bassist Jason Everman and the new line-up recorded Soundgarden 's third album in 1991 .
Simplified: Bassist Ben Shepherd joined Soundgarden in 1990 .