Taylor Swift discusses her song "Out of the Woods" and why it is representative of the goal she had for her album 1989.

Steve Skaith of the English band Latin Quarter plays "The Spearcarrier." A "spear carrier" is a nickname for a character in a movie or play who appears only in the background, generally in a non-speaking role.

Penny invents a quiz to find out whether Sheldon or Leonard is smarter, which only reveals that both of them are completely uninformed about popular culture with the exception of Star Trek.

Justin James began writing songs when he was 20 years old and now tours the world performing his music. Releases include Islands (2013), A Beautiful Life (2011), Perfect Sometimes (2009), and Sun Drenched (2007). In this video, you can hear many samples of his songs in performances and music videos.

Justin James is a singer from Vancouver, British Columbia. This song is from his record Islands.

James Bay is an English singer-songwriter and guitarist. His single "Hold Back the River" is certified platinum and appears on his debut album "Chaos and the Calm."

Bryan Adams and The Who perform Behind Blue Eyes, one of The Who's most well-known songs, at The Royal Albert Hall, London, in aid of the Teenage Cancer Trust.

Enjoy this excerpt of Led Zeppelin performing "Stairway to Heaven" at Earls Court. Written by guitarist Jimmy Page and vocalist Robert Plant, the song is widely acknowledged as one of the greatest rock songs of all time.

Justin Bieber headlined the 2015 Jingle Bell Ball in London, finishing his set with the song "Sorry."

"Sunday Bloody Sunday" is a song by the Irish rock band U2 that was written as a response to events related to conflict in Northern Ireland at the time. It is considered one of their signature songs, and is one of the band's most performed tracks.

The First Lady welcomes the first act in an evening of poetry, music and spoken word at the White House. Pianist ELEW and bassist/singer Esperanza Spalding kick off the evening with an instrumental jazz fusion performance. Enjoy!

Taylor Swift's incredible performance of her track "I Knew You Were Trouble" at Capital FM's Jingle Bell Ball!

Lifestyle video blogger Aspyn Ovard demonstrates how she packed her suitcase efficiently for a recent trip to the Bahamas.

Canadian sensation Shawn Mendes made his debut at age 16 with the album "Handwritten." Here he performs the hit single "Stitches" in a duet with US singer and actress Hailee Steinfeld.

As the story goes, the theater of the Montreux Casino caught fire during a Frank Zappa concert in 1971. Members of the British band Deep Purple were in attendance and later wrote this song about the event. "Smoke on the Water" is one of the most famous songs in rock and roll history, known for its memorable guitar riff. Enjoy commentary from keyboardist Jon Lord after the concert footage!