Hello Erdem > - what is the smallest, lightest looper on the market? The Boss RC-2 is I guess as small as it gets (just one pedal). I love to take it when I'm travelling (i.e. along with a Traveler Guitar or Mic+Impedance Converter). Btw, with a piano, you might also want to experiment with paper. Can make a nice muffled/buzzing sound. All the best Buzap -- GMX Kostenlose Spiele: Einfach online spielen und Spaß haben mit Pastry Passion! http://games.entertainment.gmx.net/de/entertainment/games/free/puzzle/6169196