POTW: Rihanna, Justin Bieber, Katy Perry, Lady Gaga, No Doubt
No Doubt hits the studio with Major Lazer producers Diplo and Switch on July 21. Major Lazer is working on the group's first album of original material since a decade.

The latest reader mailbag looks at Olympic theme songs, Maroon 5, Carly Rae Jepsen, No Doubt and Washington, D.C.'s best musicians.

As always, submit your questions about Billboard charts, sales and airplay, as well as general music musings, to askbb@billboard.com. Please include your first and last name, as well as your city, state and country, if outside the U.S.


How about another round of personal charts? DIY chart-makers, please feel free to send your current ranked favorites to askbb@billboard.com for the next "Ask Billboard."

Here's the latest from frequent Chart Beat contributor David Geib of Chicago, aka, "Muzicbuff":

1, "Fill Us With Fire" (Single Mix), Erasure
2, "Touch Me," Katharine McPhee
3, "Good Goodbye," Diana DeGarmo
4, "Trust Me" (Moto Blonco Radio Edit), Matt Zarley
5, "Ready to Be Myself," David Dunn
6, "Masquerade," Crystal Waters
7, "Girl Gone Wild," Madonna
8, "Young Homie," Chris Rene
9, "Glad You Came," the Wanted
10, "1983" (Clouds & Coffee Radio Version), Limahl
11, "Payphone," Maroon 5
12, "The Vision of Love," Kris Allen
13, "100 Proof," Kellie Pickler

14, "Free," Haley Reinhart
15, "Good Girl," Carrie Underwood
16, "Dark Side," Kelly Clarkson
17, "Never Close Our Eyes," Adam Lambert
18, "Stay," Tooji
19, "Footsteps," Frankmusik
20, "High on Love," Reidun