Can confirm this for the Wolf Howl emote. (400 creds before and after hitting rank 23)
Well, I might be stating the obvious here, but wouldn't a set of 8 be exactly what completes an Octave? 😉 ( I vote for another 4 days of Octavia noggles! Come on DE, make it happen!) ... Statement: I'm definitely not suggesting this because I want to put 8 of them around the Somachord in my Orbiter...