This year's iHeartRadio Jingle Ball Tour included performances from artists including Cher, Sabrina Carpenter, OneRepublic, Niall Horan, Doechii, Big Time Rush, Jelly Roll, AJR, Pentatonix, Melanie Martinez, Paul Russell and more.

On December 17th and 18th of 2020, Melanie Martinez performed her final show of the K-12 album era. It was available as a global pay-per-view concert.

A collaboration series with Melanie Martinez and YouTube Music looking into the inspiration behind K-12. Melanie Martinez's creative drive and talents as a visual artist have long distinguished her from other musicians. With her debut album Cry Baby, Melanie introduced the world to her distinctly original vision with hits like “Pity Party”, “Pacify Her”, “Alphabet Boy”, “Carousel” and “Sippy Cup”. Creating unique music videos for each album track, including “Soap/Training Wheels” and “Tag, You're It/Milk and Cookies”, Melanie portrays the traumas and insecurities of the album's titular character over a bed of electro pop, alternative and hip-hop. Her latest triumph K-12, an inspired new album and feature film directed by and starring Melanie, brings together a melting pot of low-key hip-hop, soulful pop and indie-leaning electro with whimsical, surreal visuals and magical realism to stunning results.

Cry Baby, a strong and sensitive girl, is sent off to a disturbing sleepaway school that’s hidden underneath a grandiose façade. Luckily, she has a sweet and unapologetic best friend who sticks up for her when she gets bullied by the other students whose brains are under control by the Principal and his wicked staff. With the help of the magical friends they meet along the way, as well as an Angelic Spirit Guide, they are able to gain the strength they need to fight off the school’s belligerent patriarchal conditioning.

The strongest vocalists from across the United states compete in a blockbusters vocal competition, the winner becomes “The Voice.” The show's innovative format features four stages of competition: the blind auditions, the battle rounds, the knockouts and, finally, the live performance shows.