Hello.
My suggestion is implement Raid Lute+Tamb+Guitar just like on Legacy.
I mean music would works for whole raid, not only 6ppl in party.
And to change Lute/Guitar to do not remove Lute/Guitar buff if somebody played on Guitar/Lute.
Why that could be useful? Because a lot of time there is not enough space in raid to divide classes which should use Lute and classes which should use guitar. For e.g. 1st party is full of Mele DPS + wrl/m, 2nd party is with healers, and mages (sometimes in 1st party isnt enough space for even some mele dps and a tank.)