Bruno Mars talks about his musical background and his collaboration with Philip Lawrence. They started working together in Los Angeles and their collaboration has led to numerous recordings, concerts, and awards. Both artists are Grammy-winners. Music critic Sarah Rodman wrote that Bruno Mars has an “indefatigable ecstatic approach to performing.”

"Issues" is the very personal debut single by American singer and songwriter Julia Michaels, recorded for her extended play, Nervous System. The song received a Grammy Award nomination for Song of the Year at the 60th Annual Grammy Awards.

This song is from Katie Melua's seventh studio album, In Winter. Melua wrote the music and lyrics with Joel Harries. The enchanting animation was created by Karni & Saul of Sulkybunny.

Barbadian singer Rihanna is one of the best-selling artists of all time. Here, she performs "Stay," an intimate, melancholy piano ballad from her seventh album Unapologetic. It also features Mikky Ekko on the vocals.

"Insomnia" is a song recorded by British dance group Faithless. Released as the band's second single, it became one of their most successful.

Written about the Polish Solidarity movement, this song is also a great listen for the new year. It's a song that U2 often performs in concert and has been chosen by both Rolling Stone and Pitchfork as one of the greatest five hundred songs of all time.

The Pogues' alternative Christmas song is not about snowflakes, mistletoe or angels, but broken promises and ruined dreams, as well as time spent in the drunk tank. There have always been lots of policemen in New York City with Irish ancestry, hence the connection with the NYPD (New York Police Department).

The Tonight Show Starring Jimmy Fallon presents Gwen Stefani performing "Under the Christmas Lights," a Christmas-season love song from her album You Make It Feel Like Christmas.

This ballad, performed by the band Coldplay is set at Christmastime, with all its colorful lights, but is actually a sad break-up song and contrasts bleak inner sentiments with the bright lights outside. But all those lights can bring hope.

Katie Melua lends her characteristic style to this gentle rendition of a well-known and loved Christmas song "O Holy Night". Melua accompanies herself on an acoustic guitar, and background vocals are provided by a choir.

The band Bastille performs their version of the popular Christmas carol "O Holy Night." They have modified and modernized the lyrics, especially in the second verse, to be more earthly, rather than heavenly, and more pessimistic than optimistic. Dan Smith is the lead vocalist of the UK band. His birthday is on July 14th, Bastille Day, hence the name of the band.

Bon Jovi surprises the crowd at Sydney Entertainment Centre by ending the concert with a John Lennon classic.

"Malibu" is a love song to the Los Angeles-area beach city and to Miley Cyrus's boyfriend, Liam Hemsworth, her co-star in the movie The Last Song.

"Frosty the Snowman" is a popular seasonal song, written by Walter "Jack" Rollins and Steve Nelson, about a snowman who comes to life and plays with the kids who built him. He knows very well he won't stay alive for long.

Harry Edward Styles is a young English singer, songwriter, and actor. He rose to stardom as a member of the boy band "One Direction." "Kiwi" is a particularly personal and explicit song, possibly about an ex-girlfriend, who might have been from New Zealand, since "Kiwi" is slang for "New Zealander."