MUsic buff effect question

HI! So...I posted on the Nexon site about my issue, but thought I'd try the guild forums as well. Perhaps someone can enlighten me with some info about what's going on with my Gloomy Sunday. 

So here is the thread on the Nexon site (I apologize for the large image size, I'm not sure about the width and height ratio settings):

Hello! Today, I was able to complete the final upgrade (gem upgrade 1: music buff effect +2) and enchanted Chord on my Gloomy Sunday. I was disappointed however, when I did not see any changes to my Battle Overture buff. Prior to the last upgrade and enchant, my Overture was a base of 32% Max ATT and 17% Crit. As you can see by the picture below, I have the following modifiers and skills: R1 Playing, Song, Battlefield Overture, GM Bard, and Yvonna title. I was wondering, is the lack of buff effect a known issue with anyone else or am I simply glitched?

Only person here I can imagine knowing the answer to that is Ki, and he's MIA xD

Thanks for responding, Idenn! I got a response on the Nexon forums; how Pullie explained it to me was that each (music buff effect #)+ was not added to the percentage as a whole. Rather, all the music buffs were added and became a multiplier as a percentage. i.e Allegro 3+, Chord 1+, Song 15+, Playing Instrument 15+, Gloomy upgrades 16+, GM Bard 5+, Yvonna title 8+ = 63
We then convert that number into a decimal and multiply it to the base r1 Battlefield Overture of 20, then add to the base. 

(.63 x 20) + 20 = 32.6%

Bleh, sorry for the long winded explanation.... >.<

Update: Got Encore enchanted to an RA suit, so yay!