...
new()
read onlyalbum:String
read onlyartist:String
read onlyartists:Array<String>
read onlycontact:String
read onlycopyright:String
read onlydata:Map<String, Array<String>>
read onlydate:String
read onlydescription:String
read onlygenre:String
read onlyisrc:String
read onlylicense:String
read onlylocation:String
read onlyloopLength:Null<Int>
read onlyloopStart:Null<Int>
read onlyorganization:String
read onlyperformer:String
read onlytitle:String
read onlytracknumber:String
read onlyversion:String
add(key:String, value:String):Void
getArray(key:String):Null<Null<Array<String>>>
getString(key:String):Null<Null<String>>