I use this build mainly on every content, I like how Harp of Rhythm keep the dmg debuff ont he boss so I can use any other skills w/o spammin Sound Shock
There are some changes for different bosses, like Valtan needs more counter so I usually change Harp of Rhythm to Rhythm Buckshot and you can easily hold all the counters at last phase with Prelude of Storm espec with Prelude of Storm, Lightning Concentration this tripod makes this skill a very long range counter.
At Vykas, my advice is to change your Drops of Ether to Vital Point Hit they are both cheap to make it legendary as engravings so you only need 1 more cheap accessory for easy lvl 3 to lvl 3 change.
I usually just skip Rhapsody of Light of my build because I focus on more dmg buff and smoother gameplay.
You should place this skill into your build if your full team is on item level on a new boss and your feel they are die on a specific patterns where you can save them. Othervise it can be useful in some situations, like its a very long push immunity at Valtan
With high enough swiftness and if you have at least lvl7 cooldown gems on Heavenly Tune and Sonic Vibration, basically you can permanent keep up the dmg buff on your party (more easy with melee dps in your group). Always start with Heavenly Tune since the mana regen helps you and your party a lot!
Use your Serenade of Salvation skill at LVL 1 GAUGE!
And focus on using Serenade of Courage at LVL 2-3 Gauge at the right moment, like after a stagger or counter!
Happy hunting!
