Install Freecorder on your computer's Web browser. You will need Freecorder or a similar recording software program to record and store the music you make with your web browser. Although many sites allow you to record the songs you create, most of them do not allow you to save your efforts to your hard drive. After you install Freecorder, you will need to restart your Web browser.
Create techno music online from one of the many online music creation websites. The site you want to use will depend on your needs, your skill in music creation and your preferences.
Hit the record button embedded in your Web browser by the Freecorder software program. Replay your techno song and hit the stop button once your song has ended.
Hit the play button embedded in your Web browser by the Freecorder program. A file folder with your song will open. Your song will be saved as an mp3, rename the mp3.
Connect to your YouTube account. Click the "upload" link in the upper right corner of YouTube.
Click "Select files from my computer." Choose the mp3 file you saved from your web browser. Select a background image file to accompany the mp3 if you desire. Upload your mp3 file and background image to YouTube.