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Going by the 3 AY-3_8910 chips, it's a sound card.
https://map.grauw.nl/resources/sound/generalinstrument_ay-3-8910.pdf
The 6522 is an interface chip.
https://www.princeton.edu/~mae412/HANDOUTS/Datasheets/6522.pdf
http://mirrors.apple2.org.za/Apple%20II%20Documentation%20Project/Interface%20Cards/Audio/Advanced%20Computer%20Products%20-%20Apple%20Music%20Machine/
As has been said it is definitely a sound card. Its similar to a Mockingboard but probably not compatible. The Mockingboard has two 6522 and two AY-3-8910 where this one has one 6522 and three AY-3-8913 (24 pin version of the sound chip). I never knew why the Mockingboard needed two 6522 because as you can see from this card one can run three of the AY-3-8910 The two 8 bpin chips are probably LM386 or some similar other amplifier chip.
With the right software this card should be able to do 9 "voices" with stereo output.
It is unfortunate there are no brand name or model name markings on the card that would help identify what software might support it. This looks like a realy great card if it were supported by software. And it would be pretty easy to clone.
Can you identify what the four smaller chips are? One looks like it says CD4050 but the other ones I can't behin to read. I'm assuming the two 8 pins as I said are some kind of amp chip like an LM386 and the other one is likely some 74LS chip.
Magic Musician
Disk images and pictures at https://mirrors.apple2.org.za/Apple%20II%20Documentation%20Project/Interface%20Cards/Audio/Magic%20Musician%20Card/
Magic Musician Card - Front.jpg
It's also the Apple Music Machine, as robspierre identified in comment #3. Documentation for that card at https://mirrors.apple2.org.za/Apple%20II%20Documentation%20Project/Interface%20Cards/Audio/Advanced%20Computer%20Products%20-%20Apple%20Music%20Machine/
apple music machine.png
Maybe they didn't print any branding on the card so that it could be sold by multiple brands, as shown above. I wonder if it was sold under any other names?
Thanks for posting that!
I messed up there... I got the specs all jumbled. The Mockingboard has 2 6522 and corresponding AY-3-8913, the 24 pin version and this one has a single 6522 and three AY-3-8910, the 40 pin version.
The two versions look to have basically the same parts on them, but they aren't exactly the same PCB layout. Look at some of the traces are shaped differently. So I don't think they didn't put the branding on the card strictly for being able to sell as different names, since they could have put the name on each of the different layous and sold them independently. But pershaps as you say there were other names they were sold as besides those two.