The aim of this paper is to present an overview of the research that w
e have conducted on the comparison between language and music processi
ng using electrophysiological approaches. Language and music are compa
red at different levels of organization: semantic, syntactic, prosodic
, on one side, and harmonic, melodic and rhythmic, on the other side.
The main conclusion is that semantic processing seems to be specific t
o language, in that the changes recorded in the brain electrical activ
ity are different for semantic than for any other kinds of processing.
By contrast, syntactic and prosodic processing elicit some patterns o
f brain waves that are similar to those found for harmonic, melodic, a
nd rhythmic processing. Furthermore, in order to directly compare lang
uage and music, experiments are reported in which we used opera, as a
perfect combination of both. Results clearly showed that different pat
terns are found when listeners heard semantically incongruous words an
d congruous words sung out of tune.