TaB Energy is marketed as a low calorie energy drink named after TaB, Coca Cola's original low-calorie cola brand. While it shares the TaB name, it is not a cola product like the original TaB. Fashion Week Daily describes it as a “sweet and sour beverage” with a taste “reminiscent of a liquid Jolly Rancher”. Some drinkers alternatively label the taste as reminding them of strawberry or watermelon Nerds, and find it bitter yet quenching. Others still find that it has a distinct leafy taste. It is sweetened with sucralose (rather than saccharin), is pale pink, and lightly carbonated.

It is packed in 10.5-US-fluid-ounce (311 ml) slim cans (with a shape similar to the can used for Red Bull). The New Yorker notes than the original Tab has 31 milligrams of caffeine and less than 1 calorie (4.2 kJ) per serving, while TaB Energy has 95 milligrams of caffeine and 5 calories (21 kJ). (It also contains 785 mg taurine, 116 mg ginseng extract, 19 mg carnitine, and 0.90 mg guarana extract, according to the can.)

James Hillier Blount (born 22 February 1974), better known by his stage name James Blunt, is an English singer-songwriter and former army officer, whose debut album, Back to Bedlam and single releases, including "You're Beautiful" and "Goodbye My Lover", brought him to fame in 2005. His repertoire can be best described as a mix of acoustic-tinged pop, rock and folk. After recording on the independent American label Custard Records, Blunt won two Brit Awards, two MTV Video Music Awards, two Ivor Novello Awards, and by 2006 was nominated for five Grammy Awards. The following year, he released his second album All the Lost Souls (2007). Blunt's third studio album, Some Kind of Trouble, was released in November 2010. Worldwide, Blunt has sold over 18 million albums, and his debut album, Back to Bedlam, is the best-selling album of the 2000s in the UK.

Blunt was an officer in the Life Guards, a cavalry regiment of the British Army, and served under NATO in Kosovo during the conflict there in 1999. While posted to Kosovo, Blunt was introduced to the work of Médecins Sans Frontières (MSF or "Doctors Without Borders"). Since then, Blunt has supported MSF by holding meet-and-greet auctions at many of his concerts.