There’s so much more to St. Patrick’s Day than often meets the eye. Just look at the Burlington Irish Heritage Festival, which, in its 22nd year, offers no shortage of ways to celebrate aspects of Celtic culture. In the days leading up to March 17, displays of Irish music, dance, history and words enliven sites in and around the Queen City. A Sunday conversation covering everything from language to sport to food gives way to a spirited sing-along with Reagh Greenleaf Jr. at Church Street pub Rí Rá, where Emerald Isle duo Brayzen Heads doles out traditional tunes over several nights. A genealogy class, music sessions, talks, kids’ activities and multiple song-and-dance-filled ceilidhs top off this family-friendly fest.