sig
type tag = {
mutable title : string;
mutable artist : string;
mutable album : string;
mutable year : string;
mutable comment : string;
mutable tracknum : int;
mutable genre : int;
}
val has_tag : string -> bool
val read : string -> Mp3tag.Id3v1.tag
val write : Mp3tag.Id3v1.tag -> string -> unit
val merge : Mp3tag.Id3v1.tag -> Mp3tag.Id3v1.tag -> Mp3tag.Id3v1.tag
val no_tag : Mp3tag.Id3v1.tag
end