Complex sentence: Timberlake initially achieved success as a member of boy band'N Sync; following the group's hiatus, he released his debut studio album as a solo artist, "Justified", in November 2002.
Split into simpler sentences: Timberlake initially achieved success as a member of boy band'N Sync. Following the group's hiatus, he released his debut studio album as a solo artist, "Justified", in November 2002.