My gf and I went on the jammin jazz tour in the evening. It was a 2.5 hour affair and we thoroughly enjoyed it. Our tour guide was a harlem native who spent the time to explain important harlem history which provided context for the tour itself, then she also pointed out all the key jazz venues that were active back in the day.
We then spent the majority of the time at 2 great local jazz venues with absolutely great sets. It was a one of a kind experience for a sunday night. Even being a local I did not know of these venues before hand and was surprised by their modest operations / looks and great talent that they brought it.