Small bump on this, the CDs I am looking for remain the same - 509, 512, 513, 516, 522, or 523. If any of those are available, I would be very pleased to see if there are tracks on there. Both this and the LGFG1 thread have been rather empty - I think 501-503 were more or less "too early" for the overall tape composition period, if that makes any sense.