Everyone complains about it being about suicide. What about...

And it wasn't the last time either as seen later with the 1975 cartoon made by Hanna-Barbara but the 1980 Filmation version was T & J back to their roots.

A bit off-topic but it could had been interesting to have a sequel of sorts to Blue Cat Blues, focusing on Tom's rival Butch to imagine how he might ended for him. We could imagine Butch having his hands full like Mary's old flame in Tex Avery's "Symphony in Slang" at 6:07 in this clip. https://vimeo.com/100989067 Just imagine how Tom would had reacted to this... ;-)