Derrick Bang, Guaraldi historian and author of "Vince Guaraldi at the Piano", commented that, "the importance of "Jazz Impressions of A Boy Named Charlie Brown" and its successor, the score to the Christmas special, cannot be overstated; rarely has an entertainment icon been so quickly—and firmly—welded to a musical composition...indeed, to an entire body of work from one individual. Guaraldi defined the "Peanuts" sound, and it's just as true today as it was in the 1960s. The compositions themselves are uniformly sparkling; it's as if the jazz pianist and his trio were waiting for this precise inspiration." Mendelson concurred: "There's no doubt in my mind, that if we hadn't had that Guaraldi score, we wouldn't have had the franchise we later enjoyed."