Translation according to P. W. Joyce:
Caherapheepa in Galway ; Cathair-a'-phiopa, the caher of the (musical) pipe, so called because a fairy piper was often heard in it, like Carrigapheepera, vol. ii. pp. 122, 449 [ reproduced below].
In many parts of Ireland there are rocks called Carrigafeepera or Carrickapheepera, the rock of the piobairé or piper; but wherther from real human musicians or fairy pipers I cannot say - probably the latter. [On page 449 Joyce writes] ..The legend of music heard from the rocks is very general in Ireland; and I take it that this is the origin of the name Carrigapheepera, the Piper's Rock, applied to certain rocks in many parts of the country: perhaps some were dancing places.