Did a bit of a demo thing for the VZ/Laser as a bit of a personal challenge.  I really don't know what Im doing, but I certainly like to pretend.
Added Shiru's "Lets Go" with SquatM engine on to Mister Beeps "The Night Dancer" with its OctodeXL engine to play both tunes in a loop continuously. These two tunes are by far my personal all time favourites. Joined together they came out to around 27k but would fail due to not enough stack space for Octode when playing Night Dancer. Added Einar's ZX0 compression to the music data, managed to get the whole lo down to a 7960 bytes binary.  Still requires around 20-24k ram to execute & self decompress, but, now plays awesomely as it should.  Started adding options to play through the cassette port and DAC-on-printer port --- that, no doubt, noone other than myself would ever use.

Keep thinking back 40+ years ago, to have had any of these 1bit engines back then would have been simply wild.  The 'out standing' music capability back then was pretty much :  0SOUNDRND(10),1:SOUNDRND(10)+21,1:GOTO0

Lyndon's 91 player with Shiru's example demo tune for the menu  & credits, and a very short slapped-together (what-is-supposed-to-be) a snippet of the intro Wolfenstein tune, poorly done by myself.  The video is taken off an emulator, and has since been proven to work as is on real VZ hardware.
The z80 Wolf engine code came from a TRS80 model 1 - the code is straight forward & would be quite easy to port to any z80 computer. 

https://www.youtube.com/watch?v=3c-gckJM84A

https://youtu.be/aQHO8xFO3pw

Also have been dabbling in playing the music through the VZ/Laser printer interface port connected directly to some amplified speakers. It is as dead-set so simple as changing the ZX's OUT($FE), A to the VZ's OUT($E), A which is in the range of the printer port being from 0 to $F. No idea why I actually chose $E though. It works.  Connect Centronics pin 6 (D4) to amplified speakers and away we go. 
Still fiddling with it; some of the engines that can output the full 256 bits to the port will make use of a 8-bit R2R resistor DAC, or down the track the use of a dedicated 8-bit DAC chip. (....but this is going 7 bits off-topic.)

Anyway, so far the printer port sounds pretty nifty on TRITONE, Phaser1, 2, and 3, PhaserX, SQUAT and SQUATM; a far nicer fuller sound than the very "tinny" sound of the internal speaker.
Have implemented an output device menu selection for a few of the engines/songs being : Speaker / Cassette Port / Printer Port.

I really wish that this existed back in the 1983 era!

https://www.youtube.com/watch?v=HLj5PDpigEw

...I totally love this song and it's not hard to see why.

I think I can support the Vtech machines fairly easily in bintracker, btw. Not sure when I'll get around to it though.

I can hear that Phaser1 tunes are missing the drums, is this part of the code wasn't ported?

I changed about 20 of the music players that work extremely well on the VZ to play out through its cassette port rather than the piezo speaker (cassette port is bits 2&3 , instead of bits 0&5). Phasers, Buzzkick, Betaphase, Squats, WTBEEP

This is a (rough) 9 minute video showing about ten songs of Utz's and Shiru's that work and sound terrific through the cassette port of a VZ300 computer. They sound so much better than the "tinny" sound of a piezo speaker that sits under the main board inside the keyboard.

Anyway, this is the VZ300 computer. Excuse the missing keys and whatnot - I only picked this particular keyboard up two weeks ago and haven't cleaned it up yet.

Much thanks to Shiru and Utz for their programming skills, their trackers & players, their tunes, their knowledge and for getting me into this 1-bit stuff.
Six years ago not a single VZ/Laser computer enthusiast would have ever thought that this was conceivably possible, yet, here we are. I'm really hoping to get a few more Laser/VZ fans enthused into 1-bit music over on our FB page, since they can now simply load in the music players via standard WAV file cassette loading, and then quickly swap over and plug in amplified speakers to listen to the resulting tunes.

https://youtu.be/77N4k8kGTVM

https://github.com/bushy555/VZ200_VZ300___1-bit_tunes

".VZ" is the VZ/Laser emulator snapshot file. These can also be converted into a WAV file, and loaded directly into a real computer.