Jam! Showbiz Music, Canada — The Top 20 Concert Tours ranks artists by average box office gross per city and includes the average ticket price for shows in North America in U.S. dollars. The previous week's ranking is in parentheses. The list is based on data provided to the tra... more info

The Mirror — The new and improved Britney Spears apparently isn't a fan of cigarette smoke - or any other kind of smoke, for that matter - while she's performing. more info

MTV.com News — Statement on her site claims crew members became ill from haze of cigarette smoke.By Gil Kaufman Britney Spears (file) Photo: Jeremy Cowart/ WireImage Concerts get stopped all the time for any number of reasons: The artist is feeling ill, ... more info

VH1 News — Britney Spears halted her Circus show Wednesday night in Vancouver over a "ventilation issue." Apparently crew members became ill from a haze of cigarette smoke. more info

411 Mania — Britney not happy with her Canadian audience... more info

The Daily Mail — The singer was just three songs into the Vancouver date of her Circus tour when the stage went black and Britney vanished off the stage. more info

The Newsroom — 'Fleetwood Mac' lead singer Stevie Nicks talks about her first solo concert recording since 1985, why cell phones and computers make her mad and her hopes for Britney Spears. (April 9) more info

The Mirror — Britney Spears has apologised to fans after her concert in Canada was delayed because of smoky conditions. more info

Yahoo! Music UK — world entertainment news - Britney Spears dramatically stormed off stage for more than an hour on Wednesday after complaining the air in the venue had become too smoky. more info

Jam! Showbiz Music, Canada — VANCOUVER, B.C. - Britney Spears is apologizing to fans for briefly delaying her Vancouver concert on Wednesday night amid smoky conditions. more info