In pre-Inca days, the valley was inhabited by two linguistically different groups, the Cabanas and the Collaguas, and their descendants can still be distinguished by their traditional hats: flat straw hats embroidered with a lace band for the Collaguas in the east and rounded felt hats intricately embroidered with cotton for the Cabanas in the west.

BBC: Exploring Peru��s epic Colca Canyon

From the first throbbing bass notes by Boris Koslov in "Gunslinging Birds" to the animated trombone and vocals of Ku-umba Frank Lacy in "E's Flat, Ah's Flat Too, " and the roaring full-band choruses that close out "Wednesday Night Prayer Meeting, " the Mingus Big Band was on.

NPR: Mingus Big Band: A Rousing, Raucous Concert

Instead of answering any of those questions, the band has offered up a timid collection that catches fire about as often as it lays flat.

CNN: Entertainment - U2's latest a muddle of music both memorable, middling