Meghan Trainor (ft. Earth, Wind & Fire) | Holidays

“Holidays” is included on A Very Trainor Christmas, pop singer Meghan Trainor‘s first holiday album, released earlier this year. All of Trainor’s family members played a part in creating the album, as songwriters, producers, background vocalists and instrumentalists.

“I’m a Christmas baby, it’s always been a dream of mine to release a Christmas Album and to do it with my family makes it that much better,” said Trainor. “Songs featuring my family are like permanent memories that I get to replay all the time. Earth, Wind & Fire and Seth MacFarlane (also featured on the album) are two of my family’s all-time-favorites – we worship the ground they walk on – so to get them to feature on this album still doesn’t feel real. Best Christmas Present Ever!”

The key change is snuck in right at the end at 2:30.

Cyndi Lauper (feat. Alison Krauss) | Hard Candy Christmas

“Hard Candy Christmas” was written by Carol Hall for the 1978 Broadway musical The Best Little Whorehouse In Texas, and made famous by Dolly Parton, who played Miss Mona in the movie adaptation of the show. The track is featured on singer Cyndi Lauper‘s 2016 album Detour, with Alison Krauss providing additional vocals. Key change at 3:03.

Nightnoise | The Wexford Carol

The Irish chamber ensemble Nightnoise was active from 1984 to 1997, and was known for their fusion of Irish, Celtic, and jazz styles. Their arrangement of this traditional carol is included on the Windham Hill‘s 1993 holiday compilation album Winter Solstice IV. Key change at 2:46.

Voctave | O Come, O Come Emmanuel/The First Noel/I Wonder As I Wander

This Christmas medley is featured on Voctave‘s 2016 album The Spirit of the Season. It includes two key changes: from D minor to D major at 1:09 as the first tune transitions into the second, and then to E minor at 2:36 for the final melody.

Mary J Blige | The First Noel

Legendary R&B artist Mary J Blige released her first Christmas album, A Mary Christmas, in 2013. Produced by David Foster, the record features guest appearances by Barbra Streisand, Chris Botti and others. It peaked at #10 on the US Billboard Top 200, and was certified Gold after selling over 500,000 copies. “The First Noel” features the American gospel vocal group The Clark Sisters, and has a series of modulations, all by half step. Starting in Gb, the tune modulates to G at 0:51, Ab at 2:00, A at 3:18, and Bb at 3:38, where it remains until the end.

Straight No Chaser | The First Noel

American a cappella group Straight No Chaser formed at Indiana University in 1996. In 2006, they released a video of “12 Days of Christmas” that has since been viewed over 24 million times on YouTube. “The First Noel” is featured on the group’s first full-length Christmas album, Social Christmasing, which came out in November. Beginning in Gb, the track modulates to Ab at 1:35.

Jacob Collier | The Christmas Song (Chestnuts Roasting On An Open Fire)

Jacob Collier released his arrangement of this holiday classic in November, and it has all the hallmarks of his distinctive style: thick chordal textures, extensive reharmonization, and frequent modulations (as well as stunning video production.) The first noticeable shift in key occurs at 2:35, then again at 3:10. At 3:48, Collier begins a cycle of modulations over the last phrase of the tune, finally landing in B at the end.