5. Rave Melody - Dont need it because I'm pure Int and I have a high max Mana. But, for a str Bard, this skill will be usefull since you have low max Mana. Should be use in emergency time only.

6. Discord Wave - It is not always do what the description does. It will mostly do the opposite. Instead of decreasing aggro, it increases it. This skill is useful to get Silk Road Gold botters killed and I don't need it max to increase aggro on the target.

Good Skills That Need To Be Maxed

I will not explain all the skills needed to be maxed but only the ones that people think is not worth to get but I found it otherwise.

1. Cure Melody - It doesn't appear to be good at first. With relatively slow cooldown time and only on 1 target. I didn't include this skill for my farming calculation. But at lvl 90, this skill will get an upgrade called Cure Music and it will randomly cured one of bad status from weakening, limitation, curse line for all the party members.
EDIT : This skill is not needed for Cure Music skill. So, dont max it if you dont have enough SP. It is still usefull when you are out of pills in war.

2. Tuning Noise / Tuning Sound - This is a low absolute damage output skill. I didn't add this before but as time goes by I have learn that absolute damage is very important. I got it maxed now both Tuning Noise and Tuning Sound. The max damage from Tuning Sound is at 2661 and it will absorb 100% Mana depending on the damage. Since the damage is fixed, I will get 2661 Mana when I hit a target. But it is also depend on the target's HP. If the target have lower HP then the damage made, I will only get Mana at the same amount of the target's HP. Why absolute damage is important? When a target is fully buffed for instance with bless, screen, fence quota and so on, you will be making the exact damage of 2661 regardless the massive buffs that the target have. And Tuning Noise is a fast cast skill and the cooldown is only 3 seconds. I have seen wizards made less than 1k damage with Meteor on a fully buffed target, where absolute damage skill will hit as much as the description says.

3. Horror Chord, Weird Chord and Booming Wave - At this particular time in Venus. I am the only Bard that have all these skills maxed. People will think, "Bard attacks is useless and low". I dont think so. Many people have seen me PVP in groups where I used all these 3 skills. And I can safely say it is deadly. Horror Chord (single target) and Weird Chord (3 target) cooldown time is only 3 seconds. It is among the fastest casting and cooldown skill in the game. I am known as the ultimate KSer in group pvp, guild war, fortress war because of these skills. I hit faster than anyone else. And if the wizard cant 1-shot a target, I will finish them off. Practice these skills and you will find it usefull. One more thing, Booming Wave is among the best/huge looking skill in the game.