Complex sentence: Diana DeGarmo on Season 3, Jessica Sierra on Season 4, and Jordin Sparks on Season 6 and also on Canadian Idol by Season 3 winner, Melissa O'Neil as one of her final 2 performances.
Split into simpler sentences: Diana DeGarmo on Season 3, Jessica Sierra on Season 4, and Jordin Sparks on Season 6. It was also covered on Canadian Idol by Season 3 winner, Melissa O'Neil as one of her final 2 performances.