▁containing ▁a ▁spo of ▁of ▁a ▁Spring ste en ▁song ▁as ▁well . ▁ ▁When ▁asked ▁about ▁the ▁similarity ▁between ▁himself ▁and ▁D yl an , ▁he ▁once ▁qui pped , ▁" I ▁guess ▁Bob ▁D yl an ▁was ▁sort ▁of ▁the ▁Dan ▁Bern ▁of ▁the ▁' 6 0 ' s ." ▁ ▁Bern stein ▁has ▁tou red ▁with ▁An i ▁Di Fran co . ▁ ▁He ▁is ▁known ▁for ▁s ard onic , ▁literary ▁lyr ics , ▁a ▁range ▁of ▁musical ▁styles , ▁and ▁a ▁folk ▁music ▁style ▁pa ired ▁with ▁rock ▁instrument ation . ▁ ▁Although ▁a ▁ve in ▁of ▁social ▁and ▁political ▁humor ▁runs ▁through ▁even ▁his ▁earliest ▁work , ▁ ▁Bern ' s ▁songs ▁became ▁more ▁explicitly ▁political ▁during ▁the ▁ 2 0 0 4 ▁US ▁president ial ▁election ▁campaign , ▁with ▁songs ▁such ▁as ▁" B ush ▁Must ▁Be ▁De fe ated " ▁and ▁" Pres ident " ▁highlight ing ▁his ▁sometimes ▁sur real ▁political ▁takes . ▁His ▁work ▁often ▁de als ▁with ▁his ▁Lith uan ian ▁Jewish ▁ancest ry , ▁as ▁in ▁songs ▁like ▁" L ith u ania ." ▁The ▁name ▁Bern stein ▁is ▁a ▁reference ▁to ▁this ▁ancest ry ; ▁on ▁a ▁trip ▁to ▁Lith u ania , ▁he ▁learned ▁it ▁was ▁his ▁family ' s ▁name ▁before ▁imm igration ▁to ▁the ▁United ▁States . ▁ ▁Between ▁ 1 9 9 7 ▁and ▁ 2 0 0 3 ▁many ▁of ▁his ▁t ours ▁and ▁record ings ▁ ▁featured ▁a ▁regular ▁cast ▁of ▁backup ▁mus icians