One Hour Compo celebrates it's 400th round on Thursday June 9th at 9:00PM EST! Don't miss it!

Compo is a slang word for "composition competition" commonly used by the arrangement community. It is derrived from the demoscene competitions by the same name. Contrary to this, compos are less of a competition and more of an excerise in composition abilites. Each compo has it's own unique format and guidelines and while some are as short as 1 hour, others can last anywhere from a month, to a few months. It's important to remember that the primary purpose of compos are to hone your skills and abilites by working within, sometimes very constricting, guidelines. These techiniques have proven essential to the growth of countless musicians.

Remember: the only way to lose a compo, is to not participate.

Recent Compos


181st 2HourTrackSundays Event (2HTS181)  Voting

2 days, 15 hours ago

Here is this week's theme video:

The participants have two hours to make a song and additional 15 minutes are granted for mastering and uploading. The chat happens on

  • Start: 2 days, 14 hours ago
  • Deadline: 2 days, 12 hours ago
  • Voting Ends: 4 days, 8 hours

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One Hour Compos

One Hour Compo - Round 466 (OHC466)  Voting

5 days, 10 hours ago

Tonight's theme is a picture theme. Please see the resources below.

You will have 1 hour to complete your song and 10 minutes to finish it up. You will then have an additional 10 minutes to upload your song. At 6 PST/9 EST you may begin your mixing, please have your files uploaded by 7:20 PST/10:20 EST. Join us for discussion in #thasauce on

  • Start: 5 days, 9 hours ago
  • Deadline: 5 days, 8 hours ago
  • Voting Ends: 1 day, 13 hours

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People's ReMixing Competition

We Are Burning Rangers (PRC357)  Active

1 week, 1 day ago

Source: Burning Rangers - We Are Burning Rangers (Sega Saturn)

"For my pick, I think I'll choose something from an amazing game that goes somewhat unnoticed - In fact, it doesn't even have a page or a single remix here at OCR(though a canceled album did give it a mention). Anyways, my pick is "We Are Burning Rangers", from Burning Rangers (Sega Saturn).

There are two versions of the song. The original features the vocals of Takenobu Mitsuyoshi of Sega Sound Team fame, while the NA version brought in Marlon Saunders(who you may recognize from many other localized Sega games). Both are almost exactly the same, with the only difference being the singers' stylistic choices."


Deadline is Wednesday September 20th 2017, 10:59 AM ThaSauce Time (16:00 UTC, 18:00 GMT).

Check the following site for the rules:

Check the Ocremix thread for more information (you can post questions there. It is also the place to post a song if you're not able to use this page):

After uploading, please check if your song plays and can be downloaded and played without problems.
Only upload MP3 Files.

It is not necessary to use ThaSauce. You can upload the song anywhere you want, but I must have a download link. So if you use SoundCloud, don't forget to allow downloads, otherwise your song does not count as an entry or bonus mix. I will still use ThaSauce as a possible place to submit songs and upload all the songs to the ThaSauce page to have the songs at one central place.

If ThaSauce is down, please also submit the song somewhere else with a download link and post the link in the Ocremix Thread.

The winner of this round may select the source for PRC359 which is not the round after this one, but the round after the next round.

  • Start: 1 week, 1 day ago
  • Deadline: 7 hours, 9 minutes
  • Voting Ends: 5 days, 7 hours

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Meat and Potatoes VGM Remix Competition

Sonic3D - RustyRuins A2 (MnP80)  Active

1 week, 3 days ago

"So I gotta pick a childhood favorite, Sonic 3D Blast (Genesis version), Rusty Ruin Zone Act 2. Got Sonic on the mind what with Mania and all."

  • Start: 1 week, 3 days ago
  • Deadline: 4 days, 9 hours
  • Voting Ends: 6 days, 19 hours

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180th 2HourTrackSundays Event (2HTS180)  Completed

1 week, 3 days ago

Here is this week's theme video:

The participants have two hours to make a song and additional 15 minutes are granted for mastering and uploading. The chat happens on

  • Start: 1 week, 3 days ago
  • Deadline: 1 week, 3 days ago
  • Voting Ends: 2 days, 15 hours ago

View Round