Schroeder (Peanuts) and Lucy and Snoopy comes out of nowhere and starts dancing on the piano, until Schroeder and Lucy start looking at him angrily and Snoopy stops dancing and looks embarrassed. Frieda sometimes leans against Schroeder's piano, making Lucy jealous. She does not seem to be much of an annoyance to him as Lucy, but Schroeder prefers Lucy over her, possibly because Frieda has no knowledge of classical music at all (in "Play It Again, Charlie Brown" she thought Beethoven was a drink, causing Schroeder to pull the piano out from under both her and Lucy). The piano's capability is illustrated
Peanuts the entire life of the Sunday strip. Most of the other characters that eventually became the main characters of Peanuts did not appear until later: Violet (February 1951), Schroeder (May 1951), Lucy (March 1952), Linus (September 1952), Pig-Pen (July 1954), Sally (August 1959), Frieda (March 1961), "Peppermint" Patty (August 1966), Woodstock (introduced April 1967; given a name in June 1970), Franklin (July 1968), Marcie (July 1971), and Rerun (March 1973). Schulz decided to produce all aspects of the strip himself from the script to the finished art and lettering. Schulz did, however, hire help to produce the comic book adaptations