User blog comment:Monstermaster13/Reinigen and music/@comment-1509826-20130430163744

Indeed it was implied in the episode it is only something certain Reinigen have, as his father refered to him as a prodigy, not as unique. Perhaphs all Reinigen posssess some musical talent, but few are able to get to Roddy's level. It is clearly something of a wesen triat, as he was able to use his musical skills to control rats, while playing an ordinary (but beautiful song) on an ordinary violin.