I run baby music groups at my house and have had really good word of mouth referrals. I invited everyone around so I could talk about why I do the musical activities I do, gave ideas for using music to map activities as they go into toddlerhood and taught them how to write simple songs.
I was dead nervous (I never get nervous) and now I'm all hyper. Every one said they had a really good time.
Bob came out to see what all the noise was and joined in some of the activities with us - he's my best advertisement.