Yes, the "tribble" leitmotif that suggested the mewling of cats sounded appropriately cute.
George Duning composed the rich, melodic scores for “Is There in Truth No Beauty” and “The Empath,” and also for the second-season ep “Metamorphosis.” “The Paradise Syndrome,” “Amok Time” and “Friday's Child” were scored by Gerald Fried, who seemed to specialize in “tribal” or, more broadly, “ethnic”-themed music.One major plaus for TOS's often derided Season Three was the musical scores. “Is There in Truth No Beauty“ and ”The Empath” were two master works and “The Paradise Syndrome” was good too.
It's true, in many of the third-season episodes, the music was better than the script!