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.