Hi Montunoman

I am so sorry to tell you, but this pack was made for the current models, PSR S670, S770 & S970......and in a near future for the Tyros 5.....

One big advantage on the New PSR S970 (series), is that now is possible to have multiple Expansion packs, that was one of the limitations of the previous models....PSR S950 has only 64 MG Flash Memory vs the PSR S970 that has 8 times more, 512 Megs=1/2 Giga in flash memory....even the PSR S770 has 160 Megs vs 64 on the previous model.

I actually have on the PSR S970 with the packs I mention below, and still have a little over half the memory still available.

I have the Banda, Mariachi-Norte--TexMex, Mexico 1 &2, Latin (Europe) and the Cumbia Latina y mas.....all in the PSR S970. I used the Yamaha Expansion Manager to "Combine" all this Expansion Packs....