Roots of 5 Seconds of Summer

Coin was an American pop rock band formed in 2012 in Nashville, Tennessee. The band originally released two EPs, one in 2012 (Saturdays) and one in 2013 (1992). They subsequently gained mainstream attention in 2015 with the lead single "Run" from their self-titled debut album, which was produced by Jay Joyce and released later the same year by Columbia.

Lovelytheband is an American rock band that formed in 2016 in Los Angeles, California, United States. The band currently consists of vocalist Mitchy Collins, and guitarist Jordan Greenwald. The band is most known for their single "Broken" which charted on several US Billboard charts.

Alex & Sierra were an American duo consisting of Alex Kinsey and Sierra Deaton, who won the third and final season of The X Factor. They were mentored by Simon Cowell. Their debut album It's About Us was released on October 7, 2014, on Columbia Records. Their EP As Seen on TV was released on September 30, 2016.

"Killer Queen" is a song by the British rock band Queen. It was written by lead singer Freddie Mercury and recorded for their third album Sheer Heart Attack in 1974. It reached number two in the UK singles chart and became their first US hit, reaching number twelve on the Billboard Hot 100. The song is about a high-class call girl and has been characterised as "Mercury's piano-led paean to a Moët-quaffing courtesan".

Hey Violet was an American pop rock band from Los Angeles, California. Its final lineup consisted of Rena Lovelis, Nia Lovelis, and Casey Moreta.

Scouting for Girls are an English pop rock band. Their name is a play on the title of the 1908 Scouting handbook Scouting for Boys. The band was formed in 2005 by three childhood friends from London, Roy Stride on vocals, piano and guitar, Greg Churchouse on bass guitar and James Rowlands on drums. They signed to Epic Records in 2007 and released their self-titled debut album that September and it reached No. 1 on the UK Albums Chart in 2008. To date, it has sold over one million copies in the UK. Over their career, Scouting for Girls have had eight top 40 singles, sold over four million records in the UK and received over one billion global streams. They have been nominated for four Brit Awards, in 2009 and 2011, and one Ivor Novello Award in 2011.

James Christopher Needle, known professionally as Jamie Scott, is an English singer, songwriter and producer.

The Romantics are an American rock band formed in 1977 in Detroit, Michigan. The band's music is often categorized as power pop and new wave. They were influenced by 1950s American rock and roll, Detroit's MC5, the Stooges, early Bob Seger, Motown R&B, 1960s North American garage rock as well as the British Invasion rockers.

David Hodges is an American songwriter and record producer from Little Rock, Arkansas. He was a studio contributor to the rock band Evanescence from 2000 to 2002, and has co-written and co-produced for pop, pop rock and country artists, including Kelly Clarkson, Celine Dion, Daughtry, Backstreet Boys, Avril Lavigne, David Archuleta, Christina Aguilera, Carrie Underwood, Jessie James, 5 Seconds of Summer, Christina Perri, and Tim McGraw.