Let me know if I missed any, as I know there are some songs that have only been performed live.
Personally, my absolute favourite is The Lakes Of Pontchartrain. I nearly cried when I first heard it. It captures Megan’s emotive power perfectly and I like how she’s singing more in her higher register, which I feel makes her emotive power more potent.
I also love Shenandoah, which I do find a bit humourous as both of my favourite Megan solos are American folk songs about bodies of water.
PS: if you haven’t posted there already, you should see my post on favourite solos from each member here:
https://www.celticwomanforum.net/index.php?topic=2968.0