A whistle (or call) is a simple aerophone, an instrument which produces sound from a stream of forced air. It may be mouth-operated, or powered by air pressure, steam, or other means. Whistles vary in size from a small slide whistle or nose flute type to a large multi-piped church organ.

Winx Club is an Italian animated television series directed, created, and produced by Iginio Straffi and his company Rainbow S.r.l.. It is part of the larger Winx Club franchise. The series is the first Italian cartoon to be sold in the United States. According to Iginio Straffi's website, "Winx Club is an action and fantasy show combined with comedic elements. In the mystical dimension of Magix, three special schools educate modern fairies, ambitious witches, and supernatural warriors, and wizards from all over the magical universe."

The World Poker Tour (WPT) is a series of international poker tournaments and associated television series broadcasting the final table of each tournament. It was started in the United States by attorney/television producer Steven Lipscomb, who served as CEO of WPT Enterprises (WPTE), the firm that controlled the World Poker Tour up to November 2009. In 2008, the WPT started offering bracelets to its event champions. Players who won a title prior to the release of the WPT Bracelet were given one retroactively. In November 2009, PartyGaming announced its acquisition of the World Poker Tour from WPTE for $12,300,000.

WWE, also known by its legal name of World Wrestling Entertainment, Inc., is an American publicly traded, privately controlled entertainment company that deals primarily in professional wrestling, with major revenue sources also coming from film, music, product licensing and direct product sales. "WWE" also refers to the professional wrestling promotion itself, founded by Jess McMahon and Toots Mondt in 1952, and, as of 2014, the largest in the world, holding approximately 320 televised and non-televised events a year, and broadcasting to about 36 million viewers in more than 150 countries. As in other professional wrestling promotions, WWE shows are not legitimate sporting contests, but purely entertainment-based, featuring storyline-driven, scripted and choreographed matches, though they often include moves that can put performers at risk of injury if not performed correctly. WWE first acknowledged this publicly in 1981, breaking the gentlemen's agreement that previously existed among promoters. Vince McMahon is the majority owner, chairman and chief executive officer (CEO) of the company. Together with his wife Linda, children Shane and Stephanie, and son-in-law Paul "Triple H" Levesque, the McMahon family holds approximately 70% of WWE's equity and 96% of the voting power in the company. The company's headquarters are located in Stamford, Connecticut, with offices in New York City, Los Angeles, London, Shanghai, Tokyo, Singapore, and Mumbai. The promotion was previously called the Capitol Wrestling Corporation (CWC), the World Wide Wrestling Federation (WWWF), the World Wrestling Federation (WWF), and World Wrestling Entertainment (WWE). Since 2011, the company has officially branded itself solely as "WWE", which is no longer an initialism, though the company's legal name was not changed.