He has collaborated with Ry Cooder, Sharon Shannon, Sinéad O'Connor, The Chieftains, Altan and La Vieja Trova Santiaguera.
His most renowned album was 1996's A Irmandade Das Estrelas, which sold an unprecedented 100,000 copies, and included collaborations with Nightnoise, Luz Casal, Tino di Geraldo, Tríona Ní Dhomhnaill and Mícheál Ó Domhnaill, Kepa Junkera, Ry Cooder, The Chieftains, and Dulce Pontes.
Nuñez was in Japan in October 2011 reciting at two locations, at Sarutahiko Shrine in Ise, Mie and a live house in Tokyo with regular collaborator Pancho Álvarez (bouzouki), his brother Xurxo Nuñez (percussion) and Begona Rioboo (fiddle) working with an Okinawan singer songwriter Koja Misako and keyboardist Sahara Kazuya.
[6] He played his first major North American tour in October 2012, accompanied by his brother Xurxo on percussion, Álvarez on guitar, fiddle player Katie McNally (in the United States), and fiddle-player Sahra Featherstone and singer Eleanor McCain (in Canada).
In January 2013 he embarked on a seven date tour of the UK with fellow pipe-player Philip Pickett and early music ensemble The Musicians of the Globe.