What makes The Ultimate Collection by Russell Watson notable?

'The Ultimate Collection' achieved significant commercial success, reaching number one on the UK Albums Chart and being certified multi-platinum. It not only solidified Watson's reputation but also contributed to the growing popularity of crossover classical music during the mid-2000s. By the time 'The Ultimate Collection' was released in 2006, Russell Watson had established himself as a prominent figure in the crossover classical genre, following his breakthrough with the album 'The Voice' in 2000. This compilation came after several successful studio albums and marked a consolidation of his best works, appealing to both classical and mainstream audiences.