According to the Internet source given below, Planxty was an Irish folk music band consisting initially of Christy Moore (vocals, acoustic guitar, bodhrán), Andy Irvine (vocals, mandolin, mandola, bouzouki, hurdy-gurdy, harmonica), Dónal Lunny (bouzouki, guitars, bodhrán, keyboards), and Liam O'Flynn (uilleann pipes, tin whistle).
Johnny Moynihan, Paul Brady, Matt Molloy (flute), Bill Whelan (keyboards), Nollaig Casey (fiddle) and, briefly, Noel Hill (concertina) and Tony Linnane (fiddle) were also temporary members.Planxty broke up twice, first in 1975 and again in 1983. The original quartet reunited in 2003.

Websites:
	Planxty	Biography by wikipedia.org.