“Voices of Angels” tour stops at the Forum on Sunday

Since 2004, the female singers in Celtic Woman have flown the flag for the music and culture of Ireland around the world, performing their unique harmonic blend at hundreds of shows and selling more than 9 million records.

The ladies in the ever-revolving lineup also have become role models for young girls in their homeland — as Éabha McMahon can attest. The 26-year-old vocalist was brought up in Dublin singing and speaking Gaelic, not even learning English until age 6.

Performing in the traditional sean nós style, McMahon (whose first name is pronounced “Ava” like actress Ava Gardner) won numerous competitions as a teen; in 2007, at 16, she joined the acclaimed choral ensemble Anúna as its youngest member. (Other notable Anúna alumni include singer/songwriter Hozier and former Celtic Woman singers Órla Fallon, Méav Ní Mhaolchatha and Lynn Hilary.)

While at college studying human rights law, she sang and performed in local Irish bars every night of the week. She knew that music was her passion, but she could only dream about making a living at it.

In her mind, one act stood above the others.

“Celtic Woman is a household name in Ireland and I would consider them to be ambassadors of Irish music. Growing up, everybody knew who they were,” McMahon said in a recent interview.

“If there was ever to be a career in music [for me], I wanted be something where I could sing in the Irish language. I remember thinking, ‘Celtic Woman is the only place to be, because they do it to such an amazing standard and they give Irish and world music a new lease on life.’”

So when she got the call to join Celtic Woman in mid-2015, she couldn’t believe her luck. Today, less than two years later, she has performed as part of three extensive tours and recorded two albums with the group: “Celtic Woman:…