Complex sentence: To date Rhydian remains one of only two classical-based acts to compete in the live shows, the other being vocal troupe G4-coincidentally, both placed second in Series 1 and 4 respectively, but outsold the eventual winners.
Split into simpler sentences: To date Rhydian remains one of only two classical-based acts to compete in the live shows. Coincidentally, both placed second in their respective series, but outsold the eventual winners.