Playing a mixture of Irish, English, and Scottish ballads, many sung in Irish (Gaeilge) and Scottish Gaelic (Gàidhlig), Monroe's music centered around acoustic guitars, dulcimer, and voices—"Hanly's brusque tones complementing Mícheál's lower-key vocals." As Monroe, Hanly and Ó Domhnaill toured Brittany often, meeting with other local and visiting Irish musicians. During this time, Brittany was enjoying a major folk revival, with artists like Alan Stivell, Tri Yann, and Sonnerien Du just emerging onto the scene. In 1974, Hanly and Ó Domhnaill recorded a single, "The Hills of Greenmore", and toured with the group Planxty as their supporting act. After enlisting the help of some of the members of Planxty—Liam O'Flynn, Dónal Lunny, and Matt Molloy—Hanly and Ó Domhnaill signed a deal with Polydor Records and recorded the album, "Celtic Folkweave". The album was produced by Dónal Lunny, one of the pioneers of the Irish folk music revival in the 1970s. A key member of three of traditional music's most influential groups—Planxty, The Bothy Band, and Moving Hearts—Lunny would remain at the forefront of the traditional Irish music movement for the next thirty-five years. The album was recorded at Eamon Andrews studios in Dublin. Hanly and Ó Domhnaill were supported in the studio by Liam O'Flynn on uileann pipes and whistle, Dónal Lunny on bodhrán, Matt Molloy on flute, Tommy Peoples on fiddle, Declan McNeils on bass, and Mícheál's sister Tríona Ní Dhomhnaill on harpsichord. The album sleeve artwork was designed by Des O'Meara & Partners Ltd. and shows three connected spiral patterns (triskelion) against a black background with "Celtic Folkweave" in white stylized lettering highlighted with gold outline (some copies have red outline). The term "folkweave" refers to a type of fabric with a loose weave. The back cover contains two photos of Mick Hanly and Mícheál Ó Domhnaill, an annoted song listing, and the album credits. The album contains eleven songs of Irish, Scottish, and English ballads, sung in Irish ("Gaeilge"), Scottish Gaelic ("Gàidhlig"), and English.