https://github.com/bushy555/Lynx_1-bit_music

...I need to add everyone's credits to that readme.md as well !

At a guess most other engines should also work using the very minor changes.

origin    $6500
bit 4 port $0084   

        device zxspectrum128
    org $6500-13                ; Origin
tap_b:    db $22,"NONAME",$22    ;name             
    db "M"                    ;type             
    dw end-begin                ;program length         
    dw begin                        ;load point       
    org $6500
begin:
...
OUT ($84), A
...
end

tap_e:    savebin "letsgo.tap",tap_b,tap_e-tap_b