I don't have time to do scriptural right now but I will give you some good stuff that should help you.
First we must admit, without the anointing on our gift... it is nothing but NOISE, SOUND, A MELODY, A NOTE
The anointing takes our gift and add's that (quoting Emeral) special spice... BAM!!!!!
The anointing can truly work when we are able to move self out of the way. This is done with our relationship with Jesus and our daily submission to Him.
Before you practice or play your instrument even if it be your voice... you must find the time to get your focus and talk to God.
"Lord, thank you for THIS day and the gift you ALLOW me to use to lift YOU up. I pray that you use me today in a mighty way that every note I play or sing breaks every yolk that would hinder your work. Lord I submit my mind, my body and my talent to you that YOU may do through me what You want to do. I can do nothing without you or your anointing and only through you am I able to bless others and exalt your name. Thank you in faith for answering my prayer as I ask this of you in Jesus name... AMEN"
This is just an example but one that I use that works for me... When I "remember"(this is key, I'm guilty to) to do this, I'm bout ready to shout by the time I get through the prayer. I get stirred up ever time.
Why get stirred up? That gets your mind off of the world, the bills, work, the annoying neighbor, all the distractions that can hinder you from getting a blessing or in this case... being a blessing.
When we forget the world and focus on Jesus, then he can FREELY use us through His anointing.
I hope this has been helpful
Kad