Hi,

how are you adding the Shaker and how are you searching for MIDI for it?

If you Add the Shaker via the ‘Add Instrument > Future Hit Instrument > Shaker’ menu, it is added as a Future Hit Shaker Pad.
This type of Instrument cannot be triggered as a regular Instrument. If you Search for Grooves for this Instrument, you will have to Filter the Power Hand column for ‘Shaker Pad’ grooves.
If you have Groove Block on the song Track, you can select the Shaker Pad in the Edit Play Style page and turn the ‘Amount’ knob to get hits added.
If you Edit in the Grid Editor, the Future Hit Shaker Pad would be named ‘Shaker’ not Instrument 1. If you expand the ‘Shaker’ Row in the Grid Editor, you see all the different articulations.

If you have added the Shaker as a regular Instrument (Alt/Option+R), it would be called ‘Instrument 1’ in the Grid Editor. This Instrument would be triggered as a regular Instrument but can’t be expected to get the same “realistic” results if you add hits in the Edit Play Style page as with a Future Hit Instrument.
If you Search for Grooves, it’s not guaranteed you will hear this Shaker played back as intended, since it depends on the assigned MIDI notes.
E.g. if I load the Latin Cuban Percussion EZX in SD3 and Search for a ‘Shaker’ Power Hand grooves, I can find grooves that sound as expected. Now, when I add a Shaker from the  same EZX to my already loaded Hansa SDX kit, the MIDI assignments are already in place and the added Shaker doesn’t “steal” the main note assignments for the drum kit but gets suggested notes outside of the core range. Hence Shaker MIDI grooves will most likely trigger drums instead. These Shaker grooves can of course be dragged to the Song Track anyway and you can transpose the notes in the Grid Editor.

In my example with a Shaker from the LCP EZX that has got many articulations, I can still assign it to a Future Hit Stack note number (7) to utilise all the articulations the same way but then it would be better to just add it as Future Hit Shaker Pad in the first place.

Does this clarify somewhat?

BR,
John