Steve Vai

Steven Siro "Steve" Vai (/vɑːɪ/; born June 6, 1960) is an American guitarist, composer, singer, songwriter, and producer, born and raised on Long Island, New York. Vai was voted the 10th "Greatest Guitarist" by Guitar World magazine, and has sold over 15 million records. A three-time Grammy Award winner and fifteen-time nominee, Vai started his music career in 1978 at the age of 18 as a transcriptionist for Frank Zappa, and joined his band from 1980 to 1983. He embarked on a solo career in 1983 and has released eight solo albums to date. He has recorded and toured with Alcatrazz, David Lee Roth, Whitesnake, as well as having recorded with artists such as Mary J. Blige, Spinal Tap, and Ozzy Osbourne. Additionally, Vai has toured with live-only acts G3, Zappa Plays Zappa, the Experience Hendrix tour, as well as headlining international tours.

Vai has been described as a "highly individualistic player" and part of a generation of "heavy rock and metal virtuosi who came to the fore in the 1980s". The launch of the Ibanez JEM guitar developed and co-designed by Vai was described as the "exact moment the entire guitar landscape was reshaped". He also designed the first commercially produced seven-string guitar, the Ibanez Universe, which was used by nu metal artists in the 1990s. He released his first solo album Flex-Able in 1984, while his most successful release, Passion and Warfare (1990), was described as "the richest and best hard rock guitar-virtuoso album of the '80s".

David Guetta

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Pierre David Guetta (French pronunciation: ​[david geta]; born 7 November 1967) is a French DJ, record producer and remixer. He co-founded Gum Productions with Lisa Dodgson and released his first album, Just a Little More Love, in 2002. Later, he released Guetta Blaster (2004) and Pop Life (2007) featuring 2 tracks with the UK's Tara McDonald.

Guetta achieved mainstream success with his 2009 album One Love which included the hit singles "When Love Takes Over", "Gettin' Over You", and "Sexy Bitch", all three of which reached #1 in the United Kingdom, and "Memories". The 2011 follow-up album, Nothing but the Beat, continued this success, containing the hit singles "Where Them Girls At", "Little Bad Girl", "Without You", "Titanium" and "Turn Me On".

Guetta has sold over nine million albums and 30 million singles worldwide. In 2011 Guetta was voted as the #1 DJ in the 'DJ Mag Top 100 DJs' fan poll.

In 2013, Billboard crowned "When Love Takes Over" as the number one dance-pop collaboration of all time.