Brand new collaboration featuring Kevin Conneff, Gerry "fiddle" O'Connor, Paul Mc Grattan and Gilles le Bigot. Could be the beginning of something interesting. Crowe's Corner, Ballyjamesduff 9.30pm €15 086-2342270. Also Sat, Dublin

Traditional Galician music combined with fearless contemporary experimentation. Their Irish debut. Glór, Ennis 8pm €18/€16 065-6843103. Also Sat, Cork

Baltimore Fiddle Fair gets into full swing. This quartet draws on sources that include Ornette Coleman, Scandinavian string bands, Aretha Franklin and their own members. Expect a serious intercultural exchange. Also featuring Bríd Harper with Marty Meehan and PJ McDonnell. West Cork Hotel, Baltimore 8pm €31 086-3753380

This week's guest is south Roscommon Singing Circle stalwart Johnstone. An Góilín, The Teachers' Club, Parnell Sq 9.30pm €3 086-8161557

Multifarious gathering of musicians support Shannon. As part of the Cathedral Quarter Arts Festival. Festival Marquee 8pm £10 048-90246609

Baltimore Fiddle Fair continues with a lunchtime recital from this flute and harp duo. Dún na Séad Castle, Baltimore 12.30pm €16 086-3753380

Cork-based world music band led by Finnish violinist Marja Tuhkanen are guests of Baltimore Fiddle Fair. Glebe Gardens, Baltimore 3pm €16 086-3753380

Wonderful opportunity to see exceptional Cape Breton fiddle player and composer Holland in the company of Dublin guitarist Doyle. The double bill also features Galician group Berrogüetto. West Cork Hotel, Baltimore 8pm €31 086-3753380

Hot on the heels of the release of their long-awaited CD, Welcome Here Again, Hayes and Cahill play tunes from their spellbinding repertoire. Seamus Ennis Centre, The Naul 8.30pm €25 01-8020898. Also Sun, Cork

Áras Chronáin, Clondalkin 9pm €15/€12 01-4574847

Featuring Barney McKenna, John Sheehan, Ed Deane, Liam Kennedy, Sean Óg McKenna, Austin Waring, Tom Moran, Leo Rickard, Kevin Ward & Niamh Ní Bheoláin. Trim Library 8pm Adm free 046-9436014

Clare fiddler and Kerry piper are guests of the Baltimore Fiddle Fair. Dún na Séad Castle, Baltimore 3pm €16 086-3753380

No, this is not a misprint. Exceptional fiddle and box duo Ó Raghallaigh and Begley are joined by Irons, whom Ó Raghallaigh has been teaching fiddle for some time. Guests of Baltimore Fiddle Fair. Glebe Gardens Amphitheatre, Baltimore 3pm €16 086-3753380

Stephane Grapellli-influenced fiddler precedes the incomparable Hayes and Cahill. Closing concert in this year's Baltimore Fiddle Fair. West Cork Hotel, Baltimore 8pm €31 086-3753380

Dublin singer with a wealth of songs from the Scottish and English tradition is this week's singing circle guest. Cork Singers' Club, An Spailpín Fánach 9.30pm Adm free 021-4277949

Seamus Ennis Centre, The Naul 8.30pm €25 01-8020898

Drama with strong traditional music score, commemorating the 400th anniversary of the flight of the earls. Featuring piper Mick O'Brien, and string quartet comprising Máire Breatnach, Steve Larkin, Simone Mendonca and Diane O'Keeffe, bassist Dan Bodwell, percussionist Robbie Harris and composer Michael Holohan on keyboards. National Concert Hall 8pm €25/€20/€15 01-4170000

Music of Sliabh Luachra and beyond shimmers in the hands of Matt Cranitch, Dónal Murphy and Tommy O'Sullivan on fiddle, accordion and guitar/voice. Kilworth Arts Centre 8.15pm €15/€12.50 025-32227

Brian Kennedy, Tríona and Maighread Ní Dhomhnaill, Mick O'Brien, Niamh De Búrca, Mark Kelly, Neil Martin and the West Ocean String Quartet, the Glackin Brothers and Breanndán Ó Beaglaoích. Fundraiser in aid of Gaelcholáiste Reachrann. Vicar Street 7.30pm €30 0818-719390

Inaugural concert in Music Network summer tour, titled Tobar An Ceoil, featuring magnificent Leitrim piper McNamara, Mayo harpist Hambley and Dublin sean nós singer Ó Donnchadha. The Coach House, Dublin Castle 8pm €15/€10 01-6719429 Also Thurs, Cork

Fear an tí heads up a night of song, titled "We Only Want The Earth". The Clé Club, Cois Life bar, Liberty Hall Centre for the Performing Arts 9.15pm €5 086-8161557

West Mayo box player and his band return from their latest foray in the US for a short home tour. Expect much of the vitality of the 1920s playing of the Flanagan brothers. Matt Molloy's, Westport 9pm €15 098-27663.

Wonderful flute and fiddle collaboration, a snapshot of the north Connaught style. Athlone Folk Club 9.30pm €15 087-7793862

Triskel Arts Centre 8.30pm €10/€8 021-4272022

88-year-old lilter Kitty Seán Cunningham headlines the first of three concerts, hosted by Age and Opportunity's Bealtaine festival. She will be joined by Eddie and Brigid Gara, both melodeon and piano accordion players and fiddler Con McGinley. Teach Huidí Beag, Bunbeg 8pm Adm free 086-6050110

Ex-De Danann singer is joined by two former Fleadh Cowboys. The Dock, Carrick-on-Shannon 8.30pm €15/€12 071-9650828