I know exactly what you mean - I'd give up about 10 years of my life just to have heard Bird in person (this is assuming I'm going to live to be 110) - I've been lucky to have heard a few of the greats, though not always in their prime - Dickey Wells, Eddie Durham, Mingus, Earl Warren, Sammy Price, Al Haig, Joe Albany, Roy Eldridge, Chet Baker - but I think we all long for that time machine -