Rascal Flatts' new album "Unstoppable" looks like it'll live up to its name, as it's on course to debut at No. 1 on the Billboard 200 chart next week. Industry prognosticators project the Lyric Street set will sell over 300,000 copies in its first week, and suggest that number could grow even higher.

If it does open at No. 1, it will be the fourth chart-topper for the band -- the most of any country group. They are currently tied for the most with the Dixie Chicks.

From the bluesy sax solo that opens the album, to the inspired songs and performances throughout, it's clear that this one's for LeRoi.

"Big Whiskey and the Groogrux King," the Dave Matthews Band's first album since 2005, is due June 2 on RCA. The album shows a number of inspirations: producer Rob Cavallo (Green Day, My Chemical Romance), the band's maturation and a focus on creating a studio project on a level with the band's potency as one of the most popular live acts in rock history. But it's hard to deny the impact of the loss of founding member LeRoi Moore, who last summer died of complications from injuries suffered in an all-terrain-vehicle accident after work on the album had begun.

Metallica is using its upcoming Rock and Roll Hall of Fame induction to stage what drummer Lars Ulrich calls "a sort of family reunion."

"I don't think there's a better time to come together than when it's about celebration," Ulrich tells Billboard.com. "I think everybody is proud of their association (with Metallica), so we're reaching out to everybody who's been a part of this, both inside the band on and on the periphery of the band over the years. And there's a big group of people coming to Cleveland for the weekend, so I look forward to seeing a lot of people I haven't seen for a long time."