Short answer: Yes.
Longer answer: This is a long debated question in the SCA with many valid perspectives. Over it’s nearly 50 years of existence, the concept of “Bard” in the SCA has grown from the classic Hollywood image of a guy with a lute-like instrument singing in a stone castle to a huge variety of SCA volunteers who enjoy some kind of performing including but not limited to: singing, instrumental music, solo and group performing, dance, poetry, theater, magic, juggling, and many more. There are very few rules concerning performing in the SCA, and we often bend them in the name of fun anyway.
It is the opinion of this event’s autocrat that the door should be left as wide open as possible for SCA volunteers to explore whatever version of performing interests them. The SCA does exist to learn and teach practices of life before the year 1600 CE, so learning and teaching what performing was really like in pre-1600 is our goal. That doesn’t mean you have to be a perfect pre-1600 expert out of the gate. Let your learning be a journey.
If you’re interested in learning about history and what life was like in the SCA time period (600-1600CE), you’re welcome in the SCA. If you’re interested in performing and learning about what performing was like in the SCA time period, you can call yourself a Bard. Or not. It’s up to you.