"The Mexican and American Southwest settings and use of material from Ennio Morricone’s scores rep the obvious ways in which “Vol. 2” derives from Sergio Leone, but equally important is the influence of the Italian master in pushing Tarantino to expand what could have been perfunctory scenes into hugely elaborated set-pieces; latter detailing is what gives “Vol. 2” its special charge for film buffs or anyone who keys into what Tarantino is up to."