TM,
At the Yamaha Music Soft website find the Yamaha PSRA2000 keyboard and you will see all the expansion voice and style packs available, including the Brazilian one. All of these are compatible with the PSRS750 and PSRS950. I don't see either of these two models yet listed under all the different Yamaha keyboards as of today. I will bring this to Yamaha's attention. I am using all of these packages in my 750 and 950 at my store and they work perfectly.