<comment-frame> ¶<comment-frame> encodes the COM & COMM
(comment) frames. #:lang is a three-letter ISO-639-2 language
code. The #:dsc fields is described in the specification as a
“short content description”.
(define-class <comment-frame> (<id3v2-frame>) (lang #:init-value "eng" #:accessor lang #:init-keyword #:lang) (dsc #:init-value "" #:accessor dsc #:init-keyword #:dsc) (text #:init-value "" #:accessor text #:init-keyword #:text))