Welcome to Buzzworthy's "The Week In Pop," where we round up new album releases, talk show musical guests, and TV performances by your favorite pop stars and more (so you don't have to).

What a great week in pop! We begin with the release of Justin Bieber's Believe Acoustic. Also, awesome twin sister duo Tegan and Sara drop their seventh studio album, Heartthrob (catch them on "Jimmy Kimmel Live" on Thursday). AND you guys, Destiny's Child (who are rumored to be possible surprise guests at the Super Bowl Halftime Show) release a compilation of Love Songs, including their first new song in eight years. Plus, "The Voice" Season 3 winner Cassadee Pope and Lisa Loeb (the latter of whom is on Thursday's "The Tonight Show With Jay Leno") release new material as well. The week caps off with Sunday's Super Bowl XLVII, where Beyoncé (and possibly the rest of Destiny's Child) take the stage (just got chills typing that) for the halftime festivities on CBS. Oh yes, and some football between the Baltimore Ravens and the San Francisco 49ers will also be happening around her performance (#teambeyonce).

NEW ALBUM RELEASES

+ Justin Bieber, Believe Acoustic: The Biebs strips things down (and not in the shirtless way, although we'd DEFINITELY approve of an all-acoustic, entirely shirtless tour) for this 11-song set. Believe club bangers, such as "Boyfriend," "Beauty And A Beat," and "All Around The World," are given more intimate turns, and the overall gentle sway showcases a mature, contemplative tone. The album houses three previously unreleased tunes, including the pensive "Yellow Raincoat," which is rumored to be a melancholic music about former love Selena Gomez (before they split). There's also new songs "I Would" and "Nothing Like Us."

+ Tegan And Sara, Heartthrob: Tegan and Sara Quin give their incredible aptitude for spine-tingling melodies and earworm choruses a bouncier and happier sheen than what's been typical of their previous six albums on this electro-pop blissout record. In the past, their intimate material mined more heartbreaking themes suited to self-reflection, new songs point to atmospheric pop ("I'm Not Your Hero"), and the synthy "Closer" is a lusty fist-pumper. That's not to say they've eschewed the #sadz for good: "How Come You Don't Want Me" (co-written by fun.'s Jack Antonoff) is as yearning as a crush can get, and the sisters have even claimed that Heartthrob is their probably their saddest record yet, but it's overall refreshing to hear them expanding past indie folk and reaching new anthemic pop heights.

+ Destiny's Child, Love Songs: One of our favorite girl groups ever returns with their first new song in almost eight years on this new compilation. Beyoncé, Kelly Rowland, and Michelle Williams handpicked 13 songs from their previously penned repertoire, like "Say My Name and "Emotion," that fit the album's title and theme. As for the new track, the Pharrell Williams-produced "Nuclear," Michelle Williams told MTV News, "It was a bunch of fun. It was just picking up right where we left off." Here's hoping this (and their possible Super Bowl appearance) spurn some more new music and a tour (after Beyoncé's completed her much-anticipated forthcoming album, of course).

Check out more new album releases, upcoming TV appearances, and performances after the jump.

+ Cassadee Pope, The Voice Complete Season 3 Collection: The former frontwoman for pop-punk group Hey Monday took "The Voice" Season 3 by storm to emerge the winner. During the competition she showcased her versatility, moving into new genre styles, including more country-tipped terrain. The 12-song set gets its physical release and includes her renditions of Maroon 5's "Payphone" and Ednaswap's (and more famously Natlie Imbruglia's) "Torn." Cassadee just signed to Universal Republic Nashville, and according to her Facebook, she's in the midst of recording her upcoming full-length debut in Nashville.

+ Lisa Loeb, No Fairy Tale: Though it's been more than eight years since Lisa Loeb's last adult-geared album (she's mostly been making children-oriented albums), you might've seen her as Rufus Humphrey's significant other in the flash forward future scene in the "Gossip Girl" finale (xoxo, we miss you already). Best known for her '90s megahits "Stay (I Missed You)" and "I Do," Lisa returns with a new 12-track album, two of which ("A Hot Minute," "The Worst") were written by Tegan and Sara. She also has a sense of humor about her own rise on "The '90s."

TV APPEARANCES AND PERFORMANCES

Monday, Jan. 28
"VH1's Big Morning Buzz Live" -- Walk The Moon
"Late Show With David Letterman" -- David Byrne & St. Vincent
"The Tonight Show With Jay Leno" -- Lady Antebellum
"Jimmy Kimmel Live" --Gavin DeGraw
"Late Night With Jimmy Fallon" -- Eric Burdon
"Last Call With Carson Daly" -- Divine Fits
"Conan" -- Los Straitjackets
"The View" -- Mary J. Blige
"The Talk" -- Preservation Hall Jazz Band

Tuesday, Jan. 29
"Tonight Show With Jay Leno" -- Aaron Neville
"Jimmy Kimmel Live" -- Halestorm
"Last Call With Carson Daly" -- Metric
"Late Night With Jimmy Fallon" -- Ultraista
"The Talk" -- Train
"The View" -- Ryan Bingham

Wednesday, Jan. 30
"Late Show With David Letterman" -- Shovels & Rope
"The Tonight Show With Jay Leno" -- Holly Williams
"Jimmy Kimmel Live" -- Antibalas
"Late Night With Jimmy Fallon" -- Bad Religion, Michael Bolton
"Last Call With Carson Daly" -- Shiny Toy Guns
"Conan" -- Ben Folds Five
"The View" -- Andrea Bocelli & David Foster
"The Talk" -- Train
"American Idol" -- "Auditions No. 5," featuring judges Mariah Carey, Randy Jackson, Nicki Minaj, and Keith Urban.

Thursday, Jan. 31
"Late Show With David Letterman" -- Macklemore & Ryan Lewis
"The Tonight Show With Jay Leno" -- Lisa Loeb
"Jimmy Kimmel Live" -- Tegan And Sara
"Late Night With Jimmy Fallon" -- Graham Parker
"Last Call With Carson Daly" -- Regina Spektor
"American Idol" -- "Auditions No. 6," featuring judges Mariah Carey, Randy Jackson, Nicki Minaj, and Keith Urban.
"Sound City" -- The documentary about the famed Los Angeles recording studio, which Foo Fighters/Queens of the Stone Age's Dave Grohl produced and directed, premieres in theaters.
"The Talk" -- Train

Friday, Feb. 1
"VH1's Big Morning Buzz Live" -- Youngblood Hawke
"Late Show With David Letterman" -- Emeli Sandé
"The Tonight Show With Jay Leno" -- Branford Marsalis
"Late Night With Jimmy Fallon" -- Andrea Bocelli
"The Talk" -- Train

Sunday, Feb. 3
"Super Bowl XLVII Halftime Show" -- Beyoncé will perform the halftime show on CBS.

Photo credit: UMG