Instrument-assisted play leads to pleasure Instrument-assisted play leads to pleasure %d8%b3%d8%b3%d9%83%d8%b3%d8%b3%d8%a7%d8%b1%d9%8a%d8%a7%d8%b3%d8%ae%d8%b1%d8%b3%d8%b1%d9%8a