"Concertina" - Anglo Concertina for the iPhone/iPod Touch in General Concertina Discussion Posted December 3, 2009 Those who get this, please let us know what you think. I have neither of the gadgets required but may get an iPod touch just so I can use this application...! Don't forget you will be able to use tunebook too: Tunebook is fantastic! I cannot agree more. I love Tunebook.