Simplify the following text for a Grade 9 native English-speaking person.
Original: Released on March 8 , 1994 , Superunknown became the band 's breakthrough album , driven by the singles `` Spoonman '' , `` The Day I Tried to Live '' , `` Black Hole Sun '' , `` My Wave '' , and `` Fell on Black Days '' ; Superunknown debuted at number one on the Billboard 200 album chart .
Simplified: Soundgarden released Superunknown in 1994 and became the band 's best-selling album , driven by the singles `` Black Hole Sun '' , `` Spoonman '' , `` My Wave '' , and `` Fell on Black Days '' . Upon its release in March 1994 , Superunknown debuted at number one on the Billboard 200 album chart .