Thanks for your message! The Big Band Grooves MIDI pack is neither included in the Decades SDX nor the Big Band EZX. It’s a separate MIDI pack with grooves that goes perfect with those sound libraries though!
More often than not the MIDI packs sold separately is not included in the EZX/SDX.
Sometimes though the exact same MIDI Content can be found both in an EZX/SDX and in a separate MIDI pack. When that is the case it’s written under the product image on the product page. (See attached image for the Blues EZX MIDI as reference)
