Hi Angela,
I'm no expert on orbs but based on your story I find this photo very interesting. Since the age of 13 I've believed in the spiritual world. My older sister lived in a haunted house for many years. A house that was bought and sold far too many times because of the activity that occured inside. I experienced it myself and it was truly unsettling to say the least. The cold draft you mentioned is all too familiar to me. That combined with the orb and the old piano says it all. I would try getting more photos around this piano or even around the house. Maybe you'll get
more orbs in the next photo or maybe not. All in all, I feel that some of those whom have passed on like to hold on to things that were once theirs. In my sister's case we found out that an elderly gentleman had died in the house.
He was a recovered alcoholic when he passed away.
Long story short..my sister had alot of parties where everyone drank and whenever she did this the spirit would act out. The house was blessed by a priest later on, then sold, then bought, then sold, etc.. I think anyone who can capture
these types of photos are lucky. Good luck to you!