I believe you have to be a little of both. Depending on the situation/venue you may have to be more of a musician one night and at other times be an entertainer. I try to have a mix, 3 slow songs followed by three faster ones with somw short ( and I mean short) stories or jokes thrown in. I hate it when someone explains what the song is about and the explanation is about 4 times longer that the song. Being an entertainer I hold no limits, if it calls for dressing up in funny hats or by acting the loonie then thats what I will do. I however would never act up during a sentimental type ballad. As much as I love folk music I must admit that I have listened to some good singers and good musicians who would put you to sleep, but just do your thing and if you and the audienec get something out of it fair play to you.