Emu ROM E-mu Orchestral Sessions Vol. 1 link 

This rare and discontinued ROM can be installed in any of the following E-mu instruments:

• Sound Modules:
      Proteus 1000, Proteus 2000, Proteus 2500, Xtreme Lead-1 (XL-1), Turbo Lead, Mo'Phatt,
      Turbo Phatt, Virtuoso 2000, Orbit 3, Vintage Pro, Planet Earth, B-3
   
 
• Keyboards:
      Ensoniq Halo, MK-6, PK-6, XK-6, Vintage Keys
   
 
• Command Stations:
      MP-7, PX-7, XL-7