Hysterica is more rock-oriented than its jazz fusion predecessor, The Hook. "Jimi" and "Django" are tributes to guitarists Jimi Hendrix and Django Reinhardt, respectively. "Silva the Cat" features synthesisers emulating the mewling of a cat, whereas the flutes evoke graceful feline movements. "Tiger" displays muscular, hard rock guitar improvisation. Closing the album is "Windermere Avenue", a mid-tempo pop song with tinges of country blues in Tolonen's lead guitar. It became a minor hit on Finnish radio in 1976, whereupon it was reissued on the compilation LP Crossection. The song is a paean to the idyllic quietude of the street, which is some ten kilometres north of central London, in the borough of Barnet.