Mummers music man Jim Fox Jr. trains future strutters

AS THE Quaker City String Band rehearsed the wooden soldier march of its latest routine on a chilly December evening, Jim Fox Jr. blended right into the horde of saxophonists playing through "Teddy Bears' Picnic" and "When Johnny Comes Marching Home." But despite being one alto among many, Fox is responsible for an outsized portion of the cacophony being raised on the second floor of the venerable Mummers band's South Philly clubhouse.