PENTATONIX
From:Texas, United States
Formed in: 2011
No. of YouTube subscribers: 8.8 million
Unique selling point: Slick and upbeat a cappella versions of pop hits with multi-part harmonies and beatboxing.
Top covers: A medley of electronic music duo Daft Punk songs that has 154 million viewson YouTube and a version of Lorde's Royals that has 56 million views.
Original music: Yes -their albums contain amix of covers and originals and they are expected to release their third album next month.
WALK OFF THE EARTH
From:Ontario, Canada
Formed in: 2006
No. of YouTube subscribers: 2.1 million
Unique selling point: Off beat and quirky videos featuring gimmicks such as five members on one acoustic guitar or weird instruments such as a Harpejji, an electric stringed instrument, or a giant, oversized guitar. Their cover of Pharrell Williams' Happy had them and a guest band squeezing into a camper van to play the song live.
Top covers: Their breakout cover Gotye's Somebody That I UsedTo Know has more than 167 million views while their a cappella version of Taylor Swift's I Knew You Were Trouble has 25 million views.
Original music: Yes -their six albums, including Sing It All Away, released in June, have originals and one of their singles, Red Hands, peaked at No. 9 on the Canadian charts in 2012.
BOYCE AVENUE
From: Florida, United States
Formed in: 2004
No. of YouTube subscribers: 7.4 million
Unique selling point: Acoustic, mellow and stripped-down versions of chart-topping hits by three brothers- Alejandro Luis, Fabian Rafael and Daniel Enrique Manzano.
Top covers: Justin Timberlake's Mirrors done with girl group Fifth Harmony, with 82million views, and Miley Cyrus' We Can't Stop, which features singer Bea Miller.
Original music: Yes -the band's two albums, All You're Meant To Be (2009)and All We Have Left (2010), comprise only originals.
KINA GRANNIS
From: California, United States
Started in: 2001
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BOOKIT / KINA GRANNIS ELEMENTS TOUR- LIVE INSINGAPORE
WHERE: Grand Theatre, MasterCard Theatres at Marina Bay Sands
WHEN: Tuesday, 7.30pm
ADMISSION: $65, $85, $101 and $121 (with meet-and-greet session), and $484(VIP box) from Sistic (go to www.sistic.com.sg or call 6348-5555)
No. of YouTube subscribers: One million
Unique selling point: Acoustic, raw covers of pop hits featuring just Grannis and an acoustic guitar, as well as her using daily, household items as percussion instruments.
Top covers: Her acoustic version of Tracy Chapman's Fast Car done with Boyce Avenue and her version of Adele's Rolling InThe Deep have more than four million views each.
Original music: Yes, and her most popular videos onYouTube are her original songs Valentine, which has 18 million views, and In Your Arms, which has 11 million views. The first video she uploaded on the video-sharing site in 2007 is an original song, Message From Your Heart, which has an impressive one million views.
POSTMODERN JUKEBOX
From:New York, The US
Formed in: 2013
No. of YouTubesubscribers: 1.4 million
Unique selling point: Contemporary pop songs from the 1980s to recent hits donein traditional and vintage pop styles such as ragtime, jazz, swing and doo-wop.
Top covers: Their doo-wop version of Miley Cyrus' We Can't Stop has 14 million views, while their jazz take on Meghan Trainor's All About That Bass has 13.8 million views.
Original music: None.
