This Arduino-based Music player can play a two-voice polyphony tune in convenient notation as MML (Music Macro Language) strings, and display the synchronized lyrics on a 16x2 Character LCD display. Momentary push buttons are used to start/stop the music.

This Arduino-based Music player can play a two-voice polyphony tune in convenient notation as MML (Music Macro Language) strings, and display the synchronized lyrics on a 16x2 Character LCD display. Momentary push buttons are used to start/stop the music.

The example plays Do-Re-Mi (from The Sound of Music) - one speaker plays the melodic notes while the second speaker plays the harmonic (left-hand notes).

The music playing happens in the background using the ProtoStax_MmlMusicPlayer Arduino library, allowing you to do other tasks like handling button presses, displaying synchronized lyrics, etc, in the main loop.

You can replace the music with your own favorite easily.

Side story I had created what I thought was an easy way to encode music scores to be played on an Arduino in my project Touchless Musical Hand Wash Timer.

But when I was working on an endless runner game with background music and sound effects, I needed a way to play the scores (background + sound effects) simultaneously in the background, while still processing game play in the main loop.

That's when I came across MML and an Arduino based MML library (MmlMusic). It provided a way to play Mml music strings, and a way to play it in the background using a timer. Bhagman's Tone library played multiple tones using multiple timers, but played individual notes and not a full score.

It made sense to me to try to extend the MmlMusic library to play multiple scores using multiple timers. Of course, that sounds a lot easier than when actually implementing it! :-)

You can multiple instances of my library, and use those to play multiple scores. By firing them off simultaneously, you can get multi-track playing capabilities, restricted only by the number of timers you have. The mega for instance has 6 timers. Of course I've only coded and tested on the Arduino Uno with its 2 timers. If you would like to help extend it and test it on the mega, that would be awesome! :-)