In the competitive world of pop music, anything can happen to up-and-coming recording artists. However, some pop singers’ careers have fallen so off the radar that many people have forgotten about them. Here are 15 pop acts from the last 15 years who you might faintly remember, and what their current activities are.

1. Tweet

Tweet's best-known single "Oops (Oh My)," which features Missy Elliott, was a Billboard smash hit in 2002. However, the poor performance of her 2005 sophomore effort, coupled with mismanagement from Atlantic Records and Umbrella Recordings, put Tweet's career in limbo for almost a decade. Now having spiritually found herself, Tweet is prepping to release her long-delayed third album on an independent label.

2. Frankie J

Best-known for his 2005 hit "Obsession (No Es Amor)" and his cover of Extreme's "More Than Words," Frankie J left Columbia Records in 2008. Although no longer a U.S. Top 40 staple, he has since started his own record label, SoulSick Muzik. He also signed with Universal Latino and released a Spanish album in 2013.

3. Amerie

Amerie broke out in 2005 with her #1 go-go jam "1 Thing" from her album "Touch." Unfortunately, her next album, 2007's Unfortunately, her next album, 2007's "Because I Love It," was never released in the United States, and Amerie was blunt about Columbia Records' failure to promote the album. After splitting with Columbia and signing with Def Jam in 2008 to release 2009's "In Love and War," Ameriie ultimately went independent in 2011. She currently has a YouTube channel on which she discusses young adult novels.

4. Jump5

Although never a Top 40 act, this Christian pop group's songs "Spinnin' Around" and "Start Jumpin'" picked up significant airplay on Radio Disney. After the group disbanded in 2007, the members Brandon and Brittany Hargest kept pursuing performing arts, and help run a dance academy with their parents. Member Chris Fedun became a performer at Disney's California Adventures, while Member Libby Hodges joined a Hank Williams tribute show. Finally, Member Lesley Moore is married and has one daughter.

5. Ashley Parker Angel

Formerly of the boy band O-Town, Parker Angel signed to Blackground Records in 2004, and released his pop-rock debut album "Soundtrack to Your Life" in 2006. The album spawned the hit single "Let U Go," peaking at #12 on the Hot 100. After leaving Blackground in 2007, Parker Angel joined the Broadway production of Hairspray as Link. More recently, he was seen this year in the national tour of Wicked.

6. Cassie

Cassie Ventura, better known mononymously as Cassie, scored a massive summer hit in 2006 with "Me & U." However, in the six years that followed, she experienced a label change and several delays for her would-be second album. Her singles "Official Girl" and "King of Hearts" failed to reach the Billboard charts. Although she finally released a mixtape in 2013, her fans continue to wait for a real album. In the meantime, she has been modeling and acting.

7. Howie Day

Howie Day is a singer-songwriter who is best-known for his 2004 singles "Collide" and "She Says." However, his subsequent personal troubles (including two high-profile arrests and a stint in rehab) derailed his career for a few years. His 2009 album "Sound The Alarm" performed poorly, causing him to leave Epic Records the following year. Since then, he has independently released a 2015 album, "Lanterns," to much acclaim.

8. Jordan Pruitt

Jordan Pruitt is best-remembered for her 2006 Radio Disney hits "Outside Looking In" and "Jump to the Rhythm." After touring with the Cheetah Girls and the cast of "High School Musical" throughout 2007, she eventually left Hollywood Records in 2011 to "make more mature music." In 2012, Pruitt competed on "The Voice" and joined Christina Aguilera's team, but was eliminated during the battle rounds. Pruitt has since become a vocal coach, gotten married, and is currently planning a Kickstarter to help fund her next album.

9. The White Tie Affair

The White Tie Affair was a pop-rock band that is best-remembered for their 2008 hit "Candle (Sick and Tired)." They performed at 2009 Warped Tour and even opened for Lady GaGa. The band broke up in 2011 after their front-man Chris Wallace scored a solo contract with the independent label, ThinkSay Records. Wallace's debut solo effort "PushRewind," which spawned a minor hit, "Remember When (Push Rewind)," in early 2013. Wallace has also since been a songwriter for The Summer Set and R5.

10. Natalie

Natalie Alvarado, known mononymously as Natalie, is best-known for her 2005 hit ballad "Goin' Crazy." She released two albums with Universal Records, one in 2005 and the other in 2006. Natalie retired from music in 2011 to coach the dance team for the Minnesota Timberwolves. She has coached the Houston Rocket Power Dancers since 2012.

11. Mario Vazquez

Mario Vazquez was a finalist on the fourth season of "American Idol," but dropped out due to contractual disagreements with 19 Entertainment. Afterwards, he signed with Arista Records in August 2005, and in 2006 released his self-titled debut album which spawned the hit single "Gallery." After Arista dropped him in 2008, he continued making music as an independent artist. Today, he divides his time performing between New York City and Miami.

12. Esmée Denters

Esmée Denters is a Dutch singer whose YouTube covers of Top 40 hits caught the attention of Justin Timberlake. He signed Denters to his label Tennmann Records in 2007, and her 2009 debut album "Outta Here" was successful in the UK and the Netherlands. In 2012, Timberlake dropped Denters from Tennmann, and she worked in a frozen yogurt shop until 2015, when she auditioned for "The Voice UK." Denters joined will.i.am's team, but was eliminated in the knockout rounds. While her fans wait for her second album, Denters continues to cover pop songs on YouTube.

13. Jordan McCoy

Jordan McCoy got her start on the short-lived "American Idol" spin-off "American Juniors" in 2003. After "Juniors" ended, P. Diddy signed her to his label Bad Boy Records, and released an EP, including the single "Just Watch Me." After she left Bad Boy in 2009, she attended John A. Logan College to pursue musical theatre and choral studies. In 2014, she married Blake Bramlett, the bassist for an Illinois rock-a-billy band The Swamp Tigers, with whom she has one daughter.

14. Teddy Geiger

Teddy Geiger is a singer-songwriter who signed with Columbia Records in 2005, and opened for Hilary Duff on her Still Wanted Tour. His biggest hit, "For You I Will (Confidence)," came from his 2006 album "Underage Thinking." After leaving Columbia Records in 2008, Geiger independently released a 2010 EP titled "Living Alone." As the result of a Pledge Music campaign, he released his sophomore album, "The Last Fears," 2013. Since then, Geiger has written songs for major Top 40 artists such as One Direction and Shawn Mendes.

15. Anna Nalick

Anna Nalick is a singer-songwriter who is remembered primarily for her 2005 hit ballad "Breathe (2 AM)." Originally signed to Columbia Records in 2003, she left the label in 2010 after a falling-out over the delay of her sophomore album, "Broken Doll." After her sophomore album, "Broken Doll & Odds & Ends," was finally released in 2011, she studied writing at UCLA and took acting classes the next year. She continues to tour the U.S. and is gearing up to release her third album, "At Now," in 2016.

It is hard for some musicians to hold on their passion for music in the midst of major label politics. However, these troubles sometimes lead to an artist experiencing a career rebirth via the independent route. Overall, it is important for up-and-coming musicians to pursue the music industry for only the right reasons: because they love it.