Tickets to see rapper Lil’ Wayne, in addition to tickets to see iconic songstress Olivia Newton-John, are both on sale this weekend, as compiled by TicketNews.

Lil’ Wayne, whose latest album, “Tha Carter III,” has generated critical and commercial success, has tickets on sale Saturday, December 27, for upcoming shows in Seattle, Phoenix and San Diego. As for Newton-John, who is among the best-selling female singers of time, she has tickets on sale today for an upcoming show in Mississippi.

R&B singer/songwriter John Legend currently has tickets on sale for an upcoming Jacksonville, FL show, and rockers Mudvayne also have tickets on sale for some Midwestern dates.

In other onsales this weekend, tickets to an upcoming Atlanta performance of the Ringling Bros. and Barnum & Bailey circus are on sale, as are tickets to Ultimate Fighting Champion’s UFC 96 in Ohio and the Miami Dolphins first-round playoff game, should they make the post-season.

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“Onsales” is a ticketing industry term describing when tickets initially go on sale to the general public. Each week, tickets are released by promoters, venues and others to dozens of events, but the number of tickets available can vary significantly between locations.

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THIS WEEK’S ONSALES

Date Event Venue City State
Friday And You Will Know Us By the Trail of Dead Middle East Cambridge MA
Friday Boxing U.S. Bank Arena Cincinnati OH
Friday Broadway In Chicago’s Historic Theatre Tour Ford Center for the Performing Arts Chicago IL
Friday Gov’t Mule & Disco Biscuits House of Blues Dallas Dallas TX
Friday Gov’t Mule House of Blues Houston Houston TX
Friday John Legend Florida Theatre Jacksonville Jacksonville FL
Friday Missy Higgins Culture Room Ft Lauderdale FL
Friday Molotov House of Blues Las Vegas Las Vegas NV
Friday Mudvayne House of Blues Cleveland Cleveland OH
Friday Mudvayne Mayo Civic Center Auditorium Rochester MN
Friday Mudvayne Riverside Ballroom Green Bay WI
Friday Olivia Newton-John Sams Town Casino Tunica MS
Friday Ringling Bros. and Barnum & Bailey: Over the Top Philips Arena Atlanta GA
Friday Seether Bogarts Cincinnati OH
Friday Sinbad Florida Theatre Jacksonville Jacksonville FL
Friday The Whigs Bowery Ballroom New York NY
Friday Tim and Eric Awesome Show, Great Job! Tour 2009 Wilbur Theatre Boston MA
Friday U.S. Hot Rod Thunder Nationals 2009 Pensacola Civic Center Pensacola FL
Saturday A Tribute to the Beatles Rain Times Union Ctr Perf Arts Moran Theater Jacksonville FL
Saturday Ben Folds Club Zoo Pittsburgh PA
Saturday Craig Robinson Trump Plaza Atlantic City NJ
Saturday Dar Williams The Parish at House of Blues New Orleans New Orleans LA
Saturday Edgar Winter Band Aladdin Theater Portland OR
Saturday Hip Hop 101: Ludacris and Guest Los Angeles Sports Arena Los Angeles CA
Saturday Lil Wayne KeyArena Seattle WA
Saturday Lil Wayne US Airways Center Phoenix AZ
Saturday Molotov House of Blues New Orleans New Orleans LA
Saturday Mudvayne Piere’s Fort Wayne IN
Saturday Mudvayne The Pearl Room Mokena IL
Saturday Ozomatli House of Blues Anaheim Anaheim CA
Saturday Tyrone Wells Hard Rock Cafe Pittsburgh PA
Saturday UFC 96 Back in Columbus Nationwide Arena Columbus OH
Monday Chinese New Year 2009 Boardwalk Hall Atlantic City NJ
Monday Lil Wayne San Diego State University, Cox Arena San Diego CA
Monday Miami Dolphins Playoff Home Game 1 Dolphin Stadium Miami Dolphins Miami FL