"Jessica" is a rock instrumental written by Dickey Betts, guitarist of The Allman Brothers Band, and Les Dudek, who played with them soon after Duane Allman's death.

Jessica was first released on the band's 1973 album Brothers and Sisters, and has subsequently been used in many different contexts. A January 2006 Wall Street Journal article referred to the piece as "a true national heirloom." It is widely known as the theme to the BBC Two motoring programme Top Gear and its popular reformatted revival.

The tune, along with "Ramblin' Man", is one of several tracks from the album which reflect a transition for the Allman Brothers foreshadowed by the stylistically similar Betts composition "Blue Sky" on the band's previous album, Eat a Peach, and accelerated with the deaths of band leader Duane Allman and bassist Berry Oakley.

The song is named for Jessica Betts, the daughter of Dickey Betts and Sandy Bluesky.

The tune is in the key of A Major, with the main guitar solo in D Major. The signature melody line, as with all of Dickey Betts' instrumental compositions, is played harmonically among various instruments, in this case, Betts taking the melody on guitar, Chuck Leavell playing the top harmony line on the Fender Rhodes electric piano, and Gregg Allman playing the bottom harmony line on the Hammond Organ. Leavell also plays grand piano on this tune, playing a solo around the 2:30 mark. Betts plays his guitar solo in the key of D Major at 3:45. The acoustic guitar is played by Les Dudek.

Jessica may refer to:

Jessica Ann Simpson (born July 10, 1980) is an American recording artist, actress, television personality and fashion designer whose rise to fame began in 1999. Since that time, Simpson has achieved many recording milestones, starred in several television shows, movies and commercials, launched a line of hair and beauty products and designed fragrances, shoes and handbags for women. She has devoted time to philanthropic efforts including Operation Smile and a USO-hosted tour for troops stationed overseas. She started the Jessica Simpson Collection in 2005.

She has achieved seven Billboard Top 40 hits, three gold and two multi-platinum Recording Industry Association of America (RIAA) certified studio albums, four of which have reached the top 10 on the US Billboard 200. She has sold 30 million albums worldwide. Simpson starred with her then-husband Nick Lachey in the MTV reality show Newlyweds: Nick and Jessica. She ventured into the country music market in 2008 and released Do You Know.

During the first part of 2010, Simpson released her second reality show on VH1 "The Price of Beauty." In October 2010 she released her first compilation album and last album under the label of Epic Records , with the name Playlist: The Very Best of Jessica Simpson. A month later she released her second Christmas album Happy Christmas under the label Primary Wave Records, owned by EMI.

Nicholas Scott "Nick" Lachey ( /ləˈʃeɪ/ lə-SHAY; born November 9, 1973) is an American singer, songwriter, actor, producer and television personality. Lachey rose to fame as a member of the boy band 98 Degrees. He later starred in the reality television series Newlyweds: Nick and Jessica with his then-wife, Jessica Simpson. He has released two solo albums, SoulO and What's Left of Me. As a solo artist Nick Lachey sold over 600,000 records and with 98 Degrees, over 10 million records worldwide. He had a recurring role on the television series Charmed.

Lachey was born near the border of Kentucky and Virginia in Harlan, Kentucky to Cate Fopma-Leimbach and John Lachey. He has a brother, Drew, a stepsister, Josie, a half brother, Isaac, and two adopted siblings, Zach and Caitlin Leimbach. Growing up in Ohio, he attended Cincinnati Public Schools-School for Creative and Performing Arts (SCPA), developing his vocal talent while excelling in sports and academics. After graduation he attended the University of Southern California (USC) in Los Angeles, California. After a year at USC, he wanted to be closer to his family and transferred to Miami University, in Oxford, Ohio, where he studied sports medicine and became a brother in the Sigma Alpha Epsilon fraternity.

Jessica Hilda Mauboy (born 4 August 1989), is an Indigenous Australian R&B singer, songwriter and actress. In 2006, Mauboy was the runner-up on the fourth season of Australian Idol, she had auditioned for the talent show in Alice Springs to pursue a recording career. Mauboy subsequently signed a contract with Sony Music Australia.

In February 2007, she released her debut live album, The Journey, which reached number four on the ARIA Albums Chart, and was certified gold by the Australian Recording Industry Association (ARIA). The album contained selected songs Mauboy performed as part of the top 12 on Australian Idol. Later that year, she briefly became a member of all-girl pop group Young Divas, before resuming her solo career early in 2008. Mauboy released her debut studio album, Been Waiting, in November 2008, which spawned her first number-one single, "Burn", as well as the album's other top 10 hits, "Running Back" and "Because". In 2010, Been Waiting was certified double platinum by the ARIA, for shipments of 140,000 units, and became the second highest-selling Australian album of 2009. At the 2009 ARIA Music Awards, Mauboy earned seven nominations for the album and singles; she won 'Highest Selling Single' for "Running Back".