Stephen Amell played Adam in the first season then was recast for the second.
There's a nice close-up of the Baldwin piano and its clearly printed name during the 1840 scenes, however, the company didn't exist at that time. The Baldwin Company didn't make its first pianos for another 50 years.
The part of Adam was played by Stephen Amell in the first season, but recast with Jon Fleming for the second season. The first episode of the second season was preceded by a recap of the previous season. In that recap, Adam's scenes were re-filmed with Jon Fleming.