MKA (Matroska Audio) is an audio container format and as such can contain an unlimited number of audio streams stored inside it, encoded with virtually any existing audio codec, like MP3 or Vorbis to name a few.

The Matroska format is being developed with the intention to become the ultimate standard in multimedia container formats and is currently well supported on all major platforms.

One of the major advantages of the MKA file format is that it supports chapter markers and subtitle tracks, allowing you to store an entire music album, separated track by track, into a single file, along with all its lyrics.

Matroska is also free of charge to use and requires no commercial license, making it an excellent choice for developers.