Is this a piano? It’s hard to believe, but it actually is a piano. No electricity involved, no laser beams, just a piano and an incredible pianist: Vikingur Olafsson from Iceland. And a piece that sounds more like a piece of electro-pop from the 1980s than Philip Glass’ “Etudes”. Glass published a first set of Etudes in 1994, a second followed in 2012. Olafsson has focused on Nos. 2, 3, 5, 6, 9, 13, 14, 15 and 20 to honour the composer’s 80th birthday.