Medford musicians Matt and Shannon Heaton are hosting their first outdoor Guided Session of Irish music at the Condon Shell. Matt (guitar) and Shannon (flute) will play favorites from their pre-pandemic Guided Sessions held at Arts at the Armory in Somerville, and their post-pandemic Virtual Guided Sessions, which are held on YouTube every first and third Saturday of the month. Resources/tunes lists can be found on Shannon’s website.