Complex sentence: However, The KLF achieved international chart success with the string of pop-house singles that began with "What Time Is Love? (Live at Trancentral)", and they became the internationally highest-selling singles band of 1991.
Split into simpler sentences: However, The KLF achieved international chart success with the string of pop-house singles that began with "What Time Is Love? (Live at Trancentral)". This led to The KLF becoming the internationally highest-selling singles band of 1991.