With his effortless stage presence and signature Irish charm, Keith Harkin has long been a fan-favorite in Celtic Thunder. And during his standout performance of “All Day Long”, Harkin brought a mix of soul, playfulness, and powerhouse vocals that had the audience captivated from the very first note.
Throughout Celtic Thunder’s Voyage tour, Harkin consistently showcased his ability to balance heartfelt emotion with lighthearted charisma. But it was “All Day Long” that highlighted just how naturally he could connect with fans.
With women in the audience screaming with excitement as he playfully teased the female backing vocalists, Harkin delivered a performance that was equal parts cheeky and soulful — a balance that only he could pull off so effortlessly.
The song has since become one of Celtic Thunder’s most-played fan favorites, with countless listeners turning to YouTube to relive the magic.
Fans continue to flood the comment section with admiration: “I love hearing Keith” wrote one viewer, while another declared, “Keith totally dominates this song and definitely makes it his own!” For many, the performance is a go-to during Celtic Thunder marathons, a testament to its staying power more than a decade later.
From intimate moments to soaring high notes, Harkin infused All Day Long with refreshing energy and emotional depth. His vocal delivery brought warmth to the playful number, while his stage chemistry with the Celtic Thunder ensemble elevated it into something unforgettable. As one fan summed it up, “Fun, uplifting song. Thanks Keith.”
Whether performed as part of Celtic Thunder’s theatrical productions or with a full band alongside his sister Rebecca Harkin at festivals like Glasgowbury, All Day Long remains a song where Keith shines brightest. His artistry, combined with his boyish charm, continues to make it one of the most beloved performances in the Celtic Thunder catalog.
What to know about “All Day Long” by Keith Harkin
“All Day Long” is an original composition by Keith Harkin, first featured in Celtic Thunder’s 2011 production Voyage. Blending folk, pop, and Celtic influences, the song showcases Harkin’s signature songwriting style — warm melodies paired with heartfelt storytelling. Beyond Celtic Thunder, Harkin also performed the song solo with a full band and his sister Rebecca Harkin at the Glasgowbury Music Festival in 2010.
Since its debut, “All Day Long” has become a fan favorite in Celtic Thunder’s repertoire, often praised for its uplifting vibe and Harkin’s engaging stage presence.
Fans describe it as “pure talent,” “simply fantastic,” and “a class act,” cementing the track as one of the group’s most replayed numbers. More than a decade on, “All Day Long” continues to resonate with fans old and new, reminding audiences why Keith Harkin remains a standout voice in Celtic Thunder’s legacy.
