Usually a "dba" an acronymn for "doing business as" is reserved for a person who is supplying services or product where that person does not operate out of a corporation or limited liability company. Many people in your industry simply go bay an "alias" and do not register their stage name as a "dba".Technically you do not need to apply for a "dba" to continue using your "professional name" but if you wish to, there seems to be nothing preventing you. Typically one registers a "dba" in the county of the state where he or she does their principal business through the county's fictitious name department. The registration is good for a certain period of time if approved. Therefter, you will need to renew it if you wish to continue using it.Good question.