A cappella vocal group Pentatonix has released their newest cover video for Meghan Trainor's smash single "No" on their official YouTube channel, and it has gone viral. Over the last five years, Pentatonix has sold in excess of 3.2 million units in the United States alone, and they have established a fan-base worldwide.

The acclaimed a cappella group has also won two Grammy awards and they have sold out venues worldwide. Their YouTube channel has accumulated over one billion views, and they appeared in the feature film Pitch Perfect 2.

Pentatonix achieves commercial success

Their latest self-titled studio album debuted at No.

1 on the Billboard 200 all-genre charts and it has been certified gold by the Recording Industry Association of America (RIAA). Their breakthrough single, "Can't Sleep Love" has earned over 18 million views on YouTube.

In addition, their holiday studio album, "That's Christmas To Me," has been certified double-platinum by the RIAA, and it includes their Grammy-winning song "Dance of the Sugarplum Fairy." Their Christmas album broke sales records, thus becoming the fourth best-selling album of 2014.

All seven of their releases have secured sports in the Top 5 on the Billboard Digital Albums chart with six of those releases peaking in the Top 10 or higher on the Billboard 200 charts. Most recently, Pentatonix garnered two gold certifications for their Grammy-winning "Daft Punk" medley. They collaborated on their version of Imagine Dragons' "Radioactive" with acclaimed electric violinist Lindsey Stirling.

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Pentatonix to tour America and Europe

The North American leg of their 2016 world tour will kick off on April 13 at BB&T Center in Sunrise, Florida, and it will wrap up on May 12 at the Merriweather Post Pavilion in Columbia, Maryland. Their tour in the United Kingdom and Europe will kick off on May 23 at Olympia Theatre in Dublin, Ireland. It will include stops in such countries as Austria, Germany, Italy, Spain and Portugal, where it will wrap up on June 26 at Coliseu Porto in Porto, Portugal.