Supplied text data set is classified into any one of a plurality of categories in accordance with the substance of the supplied text data set, and a musical composition data set is selected or generated which corresponds to the category of the text data. Content information contains first position information indicative of a stored position, such as an URL, of the supplied text data set, and second position information indicative of a stored position, such as an URL, of the selected or generated musical composition data set. One set of the content may include a plurality of text data sets and a plurality of musical composition data sets, and these text data sets and musical composition data sets may be reproduced in sequence.