Classical music sales topped £65m in 2003 with an increase of £5m on the previous year, according to the British Phonographic Industry (BPI).
Westenra began singing at an early age
New Zealand's Hayley Westenra, 16, had the top-selling classical album of the year with her debut Pure, which has sold almost 600,000 copies in the UK.
Welsh singer Bryn Terfel came in at number two, with Andrea Bocelli and Aled Jones also in the top 10.
Classical sales increased by one million copies to 14 million in 2003.
Half of the top 10 are compilations, with titles such as Smooth Classics - Do
"In 2003 the classical record industry
bounced back with a whole range of exciting artists and innovative compilations
which brought classical music to new audiences," said BPI chairman Peter Jamieson.
TOP 10 CLASSICAL ALBUMS 2003
1. Pure - Hayley Westenra
2. Bryn - Bryn Terfel
3. The Number One Classical Album 2003 - Various
4. Viaggio Italiano - Andrea Bocelli
5. Smooth Classics - Do Not Disturb - Various
6. The Very Best of Relaxing Classics - Various
7. Classical Chillout Gold - Various
8. The Very Best of Classical Chillout Gold - Various
9. Higher - Aled Jones
10. The Opera Band - Amici Forever
Westenra recorded Pure at the age of 15 and has been widely tipped to become one of classical music's biggest stars of the future.
The New Zealander was first spotted in a school play when she was six.
Bryn Terfel's latest album brings together popular classics from operas such as Carmen and The Pearlfishers, as well as recordings of Hoagy Carmichael's Lazy Bones and My Heart Will Go On from Titanic.
It also features a duet with Andrea Bocelli following their performance together at the Classical Brit awards last year.
BBC Radio 3, which concentrates on classical music, saw its figures rise slightly to 2.2 million in January while commercial station Classic FM has over six million listeners.