mpatric/mp3agic — pull request #47 by beckchr (2013-12-02 11:28:51+00:00)
Title: added ID3v2.grouping ("content group description", "TIT1"/"TT1" frame)

Support grouping (`TIT1`). Here's the description from the spec:

>TIT1
> The 'Content group description' frame is used if the sound belongs to
> a larger category of sounds/music. For example, classical music is
> often sorted in different musical sections (e.g. "Piano Concerto",
> "Weather - Hurricane").