Australian country singer-songwriter Kasey Chambers this week scored her third No. 1 debut on the Australian Recording Industry Association (ARIA) chart with her fourth album "Rattlin' Bones".

The release, a duet album with her husband, singer songwriter Shane Nicholson, is the star's first for Michael Gudinski's Liberation Records.

Chambers, who was with Virgin/EMI Music Australia for ten years, entered at the top spot with "Barricades & Brickwalls" in February 2002; "Wayward Angel"in June 2004 and "Carnival" in August 2006.

She becomes the only female act this decade to have four chart topping albums in Australia. Kylie Minogue (Mushroom/Warner) and Delta Goodrem (Sony BMG) have three each.

Chambers ties with U2 as the act with the second most No. 1 albums this decade, behind Eminem with five.

The move to Liberation this year was part of a business restructure for Chambers. She has also transferred her publishing to Gudinski's Mushroom Music and joined his Premier Artists booking agency.

"It's refreshing to see quality music getting the attention it deserves, and Kasey and Shane are a treat to work with," Gudinski tells Billboard.biz. "We're expecting strong chart action for upcoming releases by the Vines and (hip hop act) Bliss'n'Eso which should give Liberation a more important position in a rapidly fading record company landscape."

Liberation set up "Rattling Bones" with a media/retail showcases around the country and an exclusive track offered on the iTunes Music Store. The label plans to up the release's retail profile in the run-up to Mother's Day on May 11.

Radio play in urban centers remains a problem for Chambers, says Liberation managing director Warren Costello, but TV shows and regional radio are supportive. "We were pleasantly surprised by how much love there was for Kasey in the media," Costello tells Billboard.biz

Chambers and Nicholson begin a regional tour May 7, with a metropolitan run planned for later in the year.