Complex sentence: The Cat Empire have toured Australia, the United States, Canada and Europe and have released five studio albums the first two, "The Cat Empire" (2003) and "Two Shoes" (2005), achieving double platinum certification.
Split into simpler sentences: The Cat Empire have toured Australia, the United States, Canada and Europe and have released five studio albums. The first two, "The Cat Empire" (2003) and "Two Shoes" (2005), both achieved double platinum certification.