Patent ID: 7227821

Claim:
An information recording medium in which at least one set of an audio data portion and a music block, which represent a piece of music, and music information for managing the piece of music is recorded, wherein: the audio data portion includes first audio data; the music block includes first music reproduction information associated with the first audio data so as to manage reproduction of the first audio data; and the first music reproduction information includes a first block type which indicates that the first audio data for a first use is reproduction compatible-audio data, wherein: the audio data portion included in at least one set of the at least one set of the audio data portion and the music block further includes second audio data; the music block included in the at least one set of the at least one set of the audio data portion and the music block further includes second music reproduction information associated with the second audio data so as to manage reproduction of the second audio data; and the second music reproduction information includes a second block type which indicates that the second audio data for a second use is copyable data, which is different from the audio data for a first use, and the music information specifies the number of pieces of music reproduction information for managing audio data corresponding to the piece of music and indicates that the first audio data and the second audio data correspond to the same piece of music.