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Old Dominion, a modern country band from Nashville, features Matthew Ramsey, Trevor Rosen, Whit Sellers, Geoff Sprung, and Brad Tursi. With hits like "Break Up with Him" and "Make It Sweet," their contemporary sound blends country, rock, and pop. They've released multiple albums, including "Memory Lane" in 2023.

Olivier J. L. Heldens, born February 1, 1995, is a Dutch DJ and electronic music pioneer. Renowned for future house hits like "Gecko (Overdrive)," "Turn Me On," and techno productions as HI-LO, he runs the label Heldeep Records. Streamed over a billion times, he's among Spotify's top 500 streamed artists.

Olivia Lane, the dynamic gospel, country/pop singer-songwriter, underwent a transformative journey from Houston to Nashville. Overcoming vocal challenges in 2017, she embraced resilience, founded her publishing company, and released empowering songs. Olivia's podcast, "Living Instead," and faith-driven hits showcase her inspiring evolution and multifaceted dreams.

Born on November 26, 1999, in Thousand Oaks, California, Olivia Gail O'Brien rose to fame with the 2016 hit "I Hate U, I Love U" with Gnash. Signing with Island Records, she released successful singles and her debut album, "Was It Even Real?" in 2019. A self-taught musician, O'Brien faced challenges but found recognition early in her career.

Born on February 20, 2003, Olivia Isabel Rodrigo gained fame through Disney TV shows. Signing with Geffen Records in 2020, she skyrocketed to stardom with hits like "Drivers License" and "Good 4 U." Her debut album, "Sour," won three Grammys. In 2023, her second album, "Guts," showcased chart-topping singles. Rodrigo, lauded as the 2021 Entertainer of the Year by Time, holds numerous awards, including Billboard Woman of the Year in 2022.

Oliver Stanley Murs, born on May 14, 1984, achieved fame as the runner-up in The X Factor's sixth series. His chart-topping albums include "Olly Murs," "In Case You Didn't Know," and "Right Place Right Time." Beyond music, he co-hosted The X Factor, coached on The Voice UK, and presented ITV's "Starstruck." In 2022, after leaving RCA Records, he released his seventh album, "Marry Me."

Born November 12, 1984, Omarion, also known as Omari Ishmael Grandberry, gained fame as B2K's lead singer in the early 2000s. After the group disbanded in 2004, he found solo success with hits like "O" and "Ice Box." Omarion has also ventured into acting, earning accolades for his multifaceted career.

Formed in 2010 on The X Factor, One Direction, with members Niall Horan, Liam Payne, Harry Styles, Louis Tomlinson, and initially Zayn Malik, rose to global stardom. Their albums, including "Midnight Memories," topped charts, yielding hits like "What Makes You Beautiful." They made touring history, earning millions, and took an indefinite hiatus in 2016.

Formed in Tokyo in 2005, One Ok Rock spans genres from alternative rock to pop punk. They gained international acclaim with hits like "The Beginning" (2012) and achieved Billboard success with "35xxxv." Evolving their sound, they explored electronic influences in "Eye of the Storm" (2019) and returned to rock in "Luxury Disease" (2022).

OneRepublic, the American pop rock band formed in 2002, rose to fame on Myspace before their 2007 debut album "Dreaming Out Loud." The Timbaland-remixed single "Apologize" earned international success. Subsequent albums like "Waking Up" (2009) and "Native" (2013), featuring hits like "Counting Stars," solidified their global popularity.

Opeth, a Swedish progressive metal band formed in 1990, weaves diverse musical elements, including folk, blues, and death metal, into their compositions. Led by Mikael Åkerfeldt, the band's evolution from Orchid (1995) to Ghost Reveries (2005) and Watershed (2008) showcases global chart success. With 13 studio albums, Opeth's innovative sound has garnered international acclaim and over 1.5 million in sales.

Orianthi Penny Panagaris (born January 22, 1985), known as Orianthi, is an Australian guitarist, singer, and songwriter. Notably, she rehearsed with Michael Jackson in 2009 and performed with Alice Cooper. Her debut single, "According to You," peaked internationally. Elle named her among the "12 Greatest Female Electric Guitarists," and she won the "2010 Breakthrough Guitarist of the Year" award. Orianthi's diverse career showcases her musical prowess and global recognition.