season episodes were  filmed at two different times, the spring of 1967 (when a number of  the actual episode storylines were filmed) and then later that fall  (during which time all the song performances were filmed). During  the summer break, Micky let his hair grow out. The difference is  perhaps most notable in the episode "Its a Nice Place to Visit,"  when at one moment Micky is performing a song with his hair curled,  and is then seen leaving the stage with his hair straight.