Quantity   Component name
1 × old piano from bulky waste
1 × Midi Mastekeyboard ( https://www.thomann.de/de/studiologic_sl88_grand.ht )
1 × IPad Mini 2
1 × Pad Midi Interface ( http://www.korg.com/us/products/computergear/plugkey)
1 × abundance of patience to strip down the piano
1 × 2.1 speaker system ( for example: https://www.thomann.de/de/yamaha_trs_ms05.htm?ref=search_rslt_tyros+lautsprecher_327469_1 )