yourlife.usatoday.com — Songs from our past have amazing power to take us back years or decades. That is demonstrated dramatically in a clip from a new film that has gone viral in the past few days: It shows an elderly man named Henry Breher who emerges from a near stupor to dance in his chair, sing with gusto and wax poetic -- all thanks to an iPod loaded with the songs of Cab Calloway, Bing Crosby and other favorites from the nursing home resident's youth.