Psa_20:1-9 is to the chief musician also. It is a psalm of David.
The LORD hear thee in the day of trouble ( Psa_20:1 );
Actually, Jehovah, "May Jehovah hear you in the day of trouble."
the name of the God of Jacob [which is Jehovah or Yahweh] defend thee; Send thee help from the sanctuary, and strengthen thee out of Zion; Remember all thy offerings, and accept thy burnt sacrifice ( Psa_20:1-3 );
In other words, "May the Lord hear you, the name of the Lord, or Jehovah, the name of the God of Jacob defend you. May He send help and strengthen you, and remember, or take notice of all your offerings and accept your burnt sacrifices."
May he grant thee according to your own heart [that is, the desires of your heart], and fulfill all of your counsel. We will rejoice in thy salvation, and in the name of our God [Yahweh or Jehovah] we will set up our banners: for Jehovah fulfill all your requests. Now know I that Jehovah saves his anointed; he will hear him from his holy heaven with the saving strength of his right hand. Some trust in chariots, some in horses: but we will remember the name of Jehovah our God. They are brought down [those that are trusting in horses and chariots], and they are fallen: but [because we have trusted in the name of the Lord,] we are risen, and stand upright. Save, LORD: let the king hear us when we call ( Psa_20:4-9 ). "