Complex sentence: Goose was formed in the summer of 2000, in Kortrijk Although first starting out as an AC/DC cover group, they quickly turned to writing and recording their own songs, heavily incorporating synthesizers into them.
Split into simpler sentences: Goose was formed in the summer of 2000 and started out as an AC/DC cover group. A year later however the group started recording their own songs, heavily incorporating synthesizers into them.