Original: It is n't long , however , before local gang boss Maxie Fields ( Walter Matthau ) , a shadowy figure from Danny 's criminal past , puts the muscle on the boy , insisting that Danny sing at his establishment .
Simplified: Soon a local gang boss , Maxie Fields ( Walter Matthau ) , a shadowy figure from Danny 's criminal past , puts pressure on the boy , insisting that Danny sing at his saloon .