animated sequences from Snoopy, Come Home (1972), There's No Time for Love, Charlie Brown (1973), A Charlie Brown Thanksgiving (1973), and You're a Good Sport, Charlie Brown (1975). This special is the only time Charlie Brown would be voiced by Dylan Beach (in his only acting role) as well as Lucy Van Pelt being voiced by Sarah Beach (both children of late actor Scott Beach). It is unknown why Duncan Watson and Melanie Kohn were replaced, as they would return for Race for Your Life, Charlie Brown (1977). The Earth Day theme was revisited in It's the Small Things, Charlie Brown (2022). Music score It's Arbor Day, Charlie Brown was the last Peanuts special to feature original music composed by Vince Guaraldi (except where noted), who was best known for the Peanuts' signature tune, "Linus and Lucy." 47-year-old Guaraldi died suddenly several hours after completing the soundtrack for this special. With the untimely death of Guaraldi, later Peanuts animated specials lack the same jazzy musical score as previous entries. As such, It's Arbor Day, Charlie Brown is seen by some fans as the swan song of the "golden era" of Peanuts animation. In addition, it was the first Peanuts special since Charlie Brown's All Stars! (1966) that was not conducted and arranged by John Scott Trotter, who had died on October 29, 1975. Guaraldi recorded most of the music score in January 1976 at Wally Heider Studios, working as a trio with bassist Seward McCain and drummer Jim Zimmerman. Several cues contained elements of previously used songs "Baseball Theme," "Rain, Rain Go Away" and "Joe Cool". The special's main theme — a gentle waltz that incorporates elements of "Christmas Time Is Here" — is heard repeatedly throughout, going by several different titles as they pertain to a specific scene. All music cues were composed by Guaraldi and performed by the Vince Guaraldi Trio. "Rerun's Lament" (version 1, variation of "Christmas Time Is Here") "Eighty-Nine Bottles of Beer" (vocal: Vinnie Dow) (Traditional) "Rerun's Lament" (version 2, variation of "Christmas Time Is Here") "Ships Sail into Arbor" "Laughter in the Library" (variation of "Christmas Time Is Here") "Flatten Platten" (variation of "Baseball Theme") "Young Man's Fancy" (variation of "Christmas Time Is Here") "Jay Sterling Morton Jazz" (variation of "Christmas Time Is Here") "We're the Visiting Team" (variation of "Christmas Time Is Here") "Seeds for Thought" (variation of "Joe Cool") "Don't Forget the