Musical Trios - Joker Band Ensembles

Since so many jokers feature music, I've split the musical jokers just like an orchestra into a wind section, a string section, and a percussion section (coming soon). Today, to keep the jokers from a deck together (and not split across sections),  I've create a new group: the ensembles (initially just trios but a few larger groups emerged, maybe some duets might appear too).  

Here are mostly ensemble trios where a deck of card publishes three jokers each of which is playing a different instrument.

There are six trios that make up this ensemble section

I’m confused about these jokers below. While I have the bottom row of these as a set in the ensemble section, I'm now thinking that it's more complicated than that since they seem related to the two guitar jokers that I have in the Musical String section.  These five musical jokers appear related. Are they from decks with four jokers or do they get mixed and matched? Who is the publisher? I have several sets of the bottom 3 with the identical back. I have one from the top left (guitar, dark shoes) with a back that matches the one playing the bells. I have a few from top right with very similar backs to many in bottom row. Any help with these mysteries?

Want to see more jokers related mostly to music?  How about:
- Musical String Section
- Jokers: The Wind Section
- Musical  Ensemblers of Jokers (this section)
- Percussion Musical Jokers
- Famous Contemporary Musicians

- Topsy Jokers: Music Subsection (In my system, a two headed musical joker, see the example below, would go into the Topsy section where there is a musical subsection which in turns subsections into winds, strings etc). 

- Old Europeans on Jokers, Musician subsection (This is for Beethoven and his crowd, see example below)
 

Topsy Section, Musical Subsection

Mix of Strings, Percussion, and Wind

Old Europeans Section, Composers (and other artists)