members lead vocalist sydney sierota graham jeffery david sierota ( born february 5 , 1999 ) - drums sydney grace ann sierota ( born april 21 , 1997 ) - lead vocals noah jeffery david joseph sierota ( born january 1 , 1996 ) - bass and backing vocals jamie jeffery david harry sierota ( born april 9 , 1993 ) - guitar and backing vocals influences echosmith is described as an indie rock and 80 's dance-rock - influenced band .