*This description will be updated in the future.*
I can create music as digital audio (WAV, FLAC, MP3, OGG), General MIDI (MID), and module format (MOD, S3M, XM, IT). A MIDI or module file can be converted to a digital audio file if needed. When recording a MIDI to digital audio, a high quality General MIDI soundfont or synthesizer can be used for the sounds of the instruments.
I also compose music for DOOM PWADs. I can provide a reasonable number of MIDIs for a PWAD over time, or just contribute a MIDI or two or three or several along with the other musicians' PWAD music contributions.
If requested, I can make minor changes to my tracks (e.g., change instruments, edit parts to sound different as needed).
Here are some examples of my (older) music, which were made with sample-based synthesizers:
My email is: ultimatedoomer at gmx dot com (Note: This is NOT the email I use for PayPal. Contact me for the PayPal email.)
I can also create and provide music for completely free, for freeware projects.
Available for project work:
Yes! Artist is available for project work! 
Yes! Artist accepts payments by Paypal!
Accepts bank transfer:
No, artist doesn't accept payments by banktransfer.
Contact me for PayPal payment information.
All tracks by artist
So far this artist haven't put any tracks on display.