Example demonstrating simultaneous music and sound

[johnthagen]

If I understand SDL2_mixer's description properly:

SDL_mixer is a sample multi-channel audio mixer library.
It supports any number of simultaneously playing channels of 16 bit stereo audio, plus a single channel of music, mixed by the popular FLAC, MikMod MOD, Timidity MIDI, Ogg Vorbis, and SMPEG MP3 libraries.

It can play both a music channel and sound effects simultaneously? If so, it would be great if there was an example of this.

If someone shares generally how to do this (I was playing around with it for a while unsuccessfully) I'd be happy to contribute an example.