That was the first one I got, and I even got two (made one into a music box) - possibly because the game detected that I was having my other two characters pick up music, only to throw on the ground for my mayor to pick up. Or maybe it was just the notorious random number generator.
As for the question in the OP, I'm not sure yet. I've only had the club for one Saturday. But I do like Jongara a lot.
Last Saturday I tried that. First thing, I requested the song. K.K. played it. But, after he finished, I didn't get a copy of the music in my inventory. I was so disappointed! He did give me a copy of the second song he played. (Which wasn't Jongara.) Was that supposed to happen? I thought he'd always give a copy of the first requested song.
My favorite right now is K.K. Bubblegum. Also for some reason even though it's kind of a depressing song, I like K.K. Lament. I dunno, it's relaxing to me.
KK Folk- Probably my favorite, it is catchy, and it reminds me of my favorite villager and one of my first villager ever in animal crossing, kabuki.
Bubblegum K.K.-some may say it is annoying but I could just listen to it all day, it is so catchy! Both the aircheck and the live performance!
Go KK Rider- just got it off the Happy Home Showcase, it sounds really awesome, but I haven't seen the live performance.
KK Synth- Before Aika Village ruined it for me, I thought it was cheerful
KK Aria- relaxing, and the only other time I have seen Aria, the first being Wind God's Aria.
DJ KK- catchy, plus I'm named DJ (No, not after Full House) , so it reminds of myself
I hate Hypno KK. And no, Aika Village is not responsible for this one. It just reminds me so much of the song of unhealing.