midifilter.lv2 VS ESP8266Audio

You can use the MIDI Key-Range Filter (by Robin Gareus) https://x42-plugins.com/x42/x42-midifilter . Add an Ardour midi bus. Use Ardour to change the output of your piano to the new midi bus. Add 2 plugins to the midi bus 1) an instance of the Midi Key-Range Filter, 2) copy your piano midi instrument to the midi bus. Left click on the Midi Key-Range Filter, set the low and high note to E4, set the operation range to "Exclude Range". You are instructing the Midi Key Range Filter to output all notes except #E4.

And don't forget about midi humanization/randomization plugins, though, like X42 ones, so it won't sound dull or robotic.

i'd suggest using one of R Gareus lv2filters (https://x42-plugins.com/x42/x42-midifilter) possibly hosted by the jalv program if there is no other LV2 host in your setup. The "midi keys transpose filter" might do what you want. It might be agood starting point if you need to roll your own.

I am not specialist by complex MIDI work, but as I know there are MIDI filters. So you can route the same Musescore MIDI output to some MIDI tracks in Ardour and filter out all except of required instrument for each Ardour track. May be MIDI Channel filter will do this work: https://x42-plugins.com/x42/x42-midifilter

Not sure if FLStudio supports LV2 plugins, but there might be something here: https://x42-plugins.com/x42/x42-midifilter

Does qsampler support lv2.plugins or can you run it in a plugin host? https://github.com/x42/midifilter.lv2 has a plugins to filter on a variety of criteria, I'd be surprised if it can filter pitch-bends.

Having an issue here using the ESP8266 Audio library (found here).

The Arduino sketch that works for me reads the data out of PROGMEM. When I use that same raw data in ESPhome, it crashes my ESP too. Would there be a way to play from PROGMEM in ESPhome too? Other ways in the library are a function or streaming, but that doesn't fit my use case unfortunately.

If you're getting started, the ESP8266Audio library makes it easy to play audio with the Arduino toolchain. For more advanced use cases, Espressif's own ESP-ADF has a lot of useful features and examples.

Not sure where you got that. According to the ESP8266Audio documentation, the default GPIOs are 2, 15, and 3. You're trying to change 15 to 13.

ESP8266Audio is really fun and easy to use

The ESP32 might suffice for that then, depending on what you consider to be basic applications. It certainly has wifi and bluetooth functionality and you can do audio with an extra chip or an interesting workaround. The ESP32-A1S module even has the necessary chip integrated but you'll likely need to roll a custom PCB for it.

I am simply using the sample code from here. https://github.com/earlephilhower/ESP8266Audio