Los Angeles (CNN) -- Dionne Warwick, one of the most recognizable pop voices of 1960s, filed for bankruptcy last week citing more than $10 million in tax debt dating back to 1991. Warwick, 72, made hits out of many Burt Bacharach and Hal David songs and won five Grammys in a 50-year career is down. But the singer is down her last $1,000 in cash and ...