This debuff is missing from Buff - Debuff list
According to my calculations at http://l2calc.l2blah.com/ it is like that...
Psycho Symphony 1-3 - Atk. Spd. - 10 %, Casting Spd. - 10 %, Speed - 10 %
Psycho Symphony 4-5 - Atk. Spd. - 15 %, Casting Spd. - 15 %, Speed - 15 %
Psycho Symphony 6-7 - Atk. Spd. - 20 %, Casting Spd. - 20 %, Speed - 20 %
Psycho Symphony 8-9 - Atk. Spd. - 25 %, Casting Spd. - 25 %, Speed - 25 %
Psycho Symphony 10 - Atk. Spd. - 30 %, Casting Spd. - 30 %, Speed - 30 %
Hope the admin could add it.
EDIT: Basically, every buff-debuff added at C5+ is missing... Gr. Shield/Might, Judgement, Tribunal etc....