Considered to be one of the most talented fiddlers in Ireland today, Sligo-style fiddler Oisín Mac Diarmada is the fiddler and founder of Teada, an Irish traditional band dubbed "one of the most exciting traditional groups to emerge in recent years,” (Irish World)

Mac Diarmada’s Sligo fiddling embraces the “Pure traditional fiddling, raw and unadorned and all the better for it," (Hot Press) and has a "lonesome magnificence," (Irish Times) that only the best Sligo fiddlers ever achieve.

In 2001, Mac Diarmada co-founded the traditional Irish band Teada (“strings”). Monaghan native Seán McElwain (banjo and bouzouki), Co. Laois’s Paul Finn (accordion), Dubliner Tristan Rosenstock (bodhrán), and John Blake rounded out the group, and in 2005, Blake left the group and was replaced by Sligo flautist Damien Stenson. Mac Diarmada described the creation of Teada as "really a very organic process… we wanted to capture some of that rawness and individuality of the solo artist within the dynamic of a full band.”

A graduate of Trinity College in Dublin with a degree in Music Education, Mac Diarmada has released several recordings, including acclaimed solo Ar an bhFidil on Green Linnet in 2003 and four with Teada. In 2001, he founded Ceol Productions, a management, booking, and consultancy agency for traditional Irish artists.