On NBC Saturday mornings, the opening sequence originally contained clips from The Chipmunk Adventure with a new version of the theme song. The MWS episodes are noted by asterisk denotations, as are the episodes which premiered in syndication.
Since the first five MWS episodes aired on NBC before they aired in syndication, the MWS episodes are not considered to be a separate season instead, both the DiC and MWS episodes are together considered as Season 6. The last six MWS episodes premiered in syndication in December 1988, following the Ruby-Spears episodes/specials and the first five MWS episodes (which had already aired on NBC). Beginning with Once Upon a Crime, NBC ran the remainder of the DiC episodes on consecutive weeks from November 1988 to January 1989, except for three weeks in December 1988 when new episodes were not broadcast. Instead, NBC began the season with the first MWS episode, Dreamlighting, then ran the next four MWS episodes and the first four DiC episodes on alternate weeks. However, due to unknown reasons, production of the DiC episodes was delayed, and not all of them could be delivered in time for the fall season. (None of the episodes produced by DiC were included in the syndication package.) 13 episodes were produced by DiC Enterprises for NBC Saturday mornings while 11 were produced by Murakami-Wolf-Swenson (MWS) specifically for the syndication package which premiered in fall 1988, in order to bring the episode count up to the standardized 13-week "daily strip" total of 65 episodes. Season 6 actually consists of two groups of episodes. The Chipmunks (1988-1989) Main article: The Chipmunks (TV series) Season 6 (1988-1989)
The show was created in a Three Short format while the other chipmunk series use a Two Short format, nevertheless, both covered the same amount of time. The Alvin Show is the first television series to feature Alvin and the Chipmunks, originally running for a single season in prime time on CBS on Wednesdays, 7:30-8pm Eastern. The Alvin Show (1961-1962) Main article: The Alvin Show 4 The Chipmunks Go to the Movies (1990).