Be sure to add me to your favorites list Synth Set One, Synthesizer Sound Set On Floppy Disk, for Use with the Yamaha SY99 Workstation Only. This is a set of sound patches on floppy disk for the SY99 synthesizer, and is a backup floppy disk in new condition. With 6 new synthesizer waveform samples and 32 new voices. Best of all, if you like to make your own sounds like me, use can use it to make many more sounds with your SY-99. This is a diskette that is loaded directly into your SY's disk drive, this is NOT an SY99 itself. This disk is a double density disk (the type of disk that this synthesizer strongly prefers), new and unused, except to load the data onto it of course. The appearance of the disk you get will vary, as I usually have several different brands of disks available, since DD disks aren't easy to find these days, but it will be unused and in excellent working condition. This is a floppy disk only, not a synthesizer or anything else included. * Note, please make sure that your SY99 disk drive is working correctly before purchasing this disk, as the floppy disk drive is the first thing to fail on these types of keyboards, which are more than 25 years old now. If you've just bought an SY99, it's best to try to save to and load from a blank disk first to make sure it works before you try a disk like this one. If it doesn't work, it's far more likely that the drive is bad, than the disk. Thank you! Thanks for looking! Please check out my Store!