Complex sentence: The couple discovered one another while performing in their home town clubs in Cardiff in their native Wales as solo artists, first meeting in the Toucan Club, and decided to write and perform their own original songs as a duo.
Split into simpler sentences: The couple discovered one another while performing in their home town clubs in Cardiff, Wales as solo artists, meeting. The pair first met in the Toucan Club, Cardiff, in their native Wales, and decided to write and perform their own original songs as a duo.