Anyone who's a serious buyer, seller or evaluator of your art won't want to find out "your choice in music", therefore minimize the music presentation as it only detracts from your function. Remember, the purpose is to present and sell your good.
Calling cards come with many great features, in order to these more convenient for potential customers. One of such features is the speed dial option. This automates the dialing process for the phone number you want to call.