Tau ntau tshaj 20 xyoo Musicians On Call (MOC) tau coj cov suab paj nruag nyob thiab kaw rau hauv txaj ntawm cov neeg mob hauv cov chaw kho mob. MOC Volunteer Musicians tau ua rau ntau dua 800,000 tus neeg mob, tsev neeg thiab cov neeg saib xyuas ntawm cov chaw thoob plaws tebchaws. Musicians On Call yog lub teb chaws tus thawj coj lub koom haum muab lub hwj chim kho mob ntawm suab paj nruag, pab cov tib neeg nyob rau hauv cov chaw xws li cov me nyuam lub tsev kho mob mus rau cov neeg laus cov tsev kho mob, VA tsev kho mob thiab hospices.