[1][2] His annual “United State of Pop” mashup features the top 25 songs of the year, based in part on the Billboard's Year-End Hot 100 chart, in one mix.

[3] At the University of Illinois, Roseman started as a physics major,[4] before changing to music theory and computer science.

And even the dance music that is there is more gentle, like [Robin Thicke's] "Blurred Lines" and [Daft Punk's] "Get Lucky", and not EDM bangers.

The "United State of Pop" became this dance track from '09 to '12, and then starting last year, there just wasn't enough in that genre to fully support it, so I went down-tempo.

[19] "How We Do"—Earworm's tenth mashup in the United State of Pop series, for 2017—once again featured a mash-up of 25 songs from the year, with "Despacito" serving as the basis of the track.

[20] In 2018, he released "Turnin' it Up", featuring a mashup of 25 songs, including Dua Lipa's "New Rules", Ariana Grande's "No Tears Left to Cry", Camila Cabello's "Never Be the Same", and more.

at the Disco's "High Hopes", Benny Blanco, Halsey and Khalid's "Eastside" and Lizzo's "Good as Hell" featured among the 25 songs.

In 2020, Earworm's United State of Pop came back with "Something to Believe In", with The Weeknd's "Blinding Lights" as the basis of the track, alongside 24 other songs.

In 2021, "Strawberry Ice Cream" was released, with Olivia Rodrigo's Deja Vu as the basis of the track, with 24 other songs also included.

In 2022, "I Want Music" was released, again featuring 25 hits, with multiple songs by Bad Bunny and Harry Styles making the mix.

[21] In July 2013, DJ Earworm released "SummerMash '13" featuring a mashup of popular songs from mid-2013 that embody "the spirit of summer 2013".

[23] Earworm returned for his third "SummerMash" in 2015, with tracks like Taylor Swift's "Bad Blood", Maroon 5's "This Summer" and Wiz Khalifa and Charlie Puth's "See You Again" (soundtrack to the 2015 film Fast & Furious 7) featured in the mashup.

[29] In May 2014, Earworm released "Mash Up for What" featuring Jason Derulo's "Talk Dirty", Pharrell Williams's "Happy", and DJ Snake and Lil Jon's "Turn Down for What".