The Techno Production Challenge is a recurring event on r/TechnoProduction.  The purpose of the challenge is to allow participants to explore different aspects of techno production, to inspire and promote creativity.  

For TPC One, these were the rules:  
* Use only the samples provided as source material.
* You may process the samples and add effects at your own discretion.
* Use no more than 8 Midi and/or Audio Tracks in your project!
* The track file may not exceed 3 minutes in length.
* Name the track after your favourite element from the Periodic Table.
* Name the file using this format: [Track name] - [reddit user name aka Artist name]. Artist name is optional.
* Submit the file as a stereo 44.1 kHz 320 kbps mp3 file.

These were the samples:
https://soundcloud.com/technoproductionchallenge/sets/tpc-one-samples

Techno Production Challenge One - The Tracks!

These are the contributions to Techno Challenge One.

The tracks are featured in the order they were submitted.

Zigsonn - Bismuth

TheGreatAndross - Nihonium

empty_fridge (aka Strictly Raw) - Xenon

estum - Beryllium

zinodaur - Hydrogen

SimperBeats (aka 88756) - Radon

This is the upload space for contributions to the Techno Production Challenge that started at https://www.reddit.com/r/TechnoProduction/

Each new challenge gets a new playlist, and the tracks are then reviewed and voted on in a "reveal" post.