Sales of pop icon Whitney Houston's records have soared since it was announced that the singer was found dead in a bathtub at Los Angeles' Beverly Hilton Hotel.

Seven of Houston's records are currently in the top 10 on Amazon.com's best sellers in music list, and the legendary singer who died at the age of 48 was only edged out of the top spot by singer Adele, who took home six Grammy awards Sunday night. Houston's compilation "Whitney Houston - The Greatest Hits" comes in at number two.

Fans instantly drove Houston to number one the iTunes charts as well, with her cover of Dolly Parton's "I Will Always Love You" shooting to the top of the site's charts and becoming the number one download. Her 1980s classic "I Wanna Dance With Somebody" is also in the top 10, and a number of the singer's other singles quickly re-entered the iTunes top 100.

Apple has been accused of cashing in on Houston's unexpected death by hiking the price of the download since the news of her death broke. Houston's 2007 Ultimate Collection increased by £3 to £7.99 in the space of just 30 minutes, according to the website Digital Spy.

It is expected that mourning fans will keep the singer's albums and singles at the top of the charts over the next few weeks.