Complex sentence: In 1976, the band signed an international deal with Atlantic Records and toured extensively throughout Europe, including their first UK tour sponsored by "Sounds" magazine, called the'Lock Up Your Daughters Summer Tour'.
Split into simpler sentences: In 1976, the band signed an international deal with Atlantic Records. They toured extensively throughout Europe, including their first UK tour sponsored by "Sounds" magazine, called the'Lock Up Your Daughters Summer Tour'.