Hi Squeak
Could you explain what you mean by "custom strings"? Is this a strings voice you have tweaked (modified).
I agree that the MP3 cuts out the quality. If you recorded this song at 44kHz WAV format it would take 22MB of space.
Now, having heard that Yamaha is going to introduce replacements of their DGX series at Winter NAMM show I wonder if their new low-end keyboards will be able to rival Casio WK regarding sound quality.
I miss such pleasant sounding strings on my keyboard very much.
Thanks for sharing
George