[Dr. Frank]

@Dr. Frank

Perhaps you could create different libraries to achieve what you want; that way you could have the same song-id  on different songs.
So instead of selecting a collection, the user has to select a library (MSP supports this)

I've no idea if this will work as I haven't need to go down the multiple libraries route.

Geoff

@Geoff:

Okay, this seems to be a way to handle multiple Song-ID´s.

During a gig we will see how practicable it is.
Maybe it will take a lot time to change the library and maybe we will need an internet-connection.
I must try this.
From one song to another there not much time for the musicians to change libraries or something else.
I thought changing the collection could be very fast.

But, thanks for your hint - I will try it
Frank