1)
Why did they say "your servants are in front of you"?
1.
Rashi: We will do your command. Radak - tell them to find a musician for you!
2)
What is the meaning of "Yodea Menagen ba'Kinor"?
1.
Radak #1: He know that the Chachmah of music; he plays a harp.
2.
Targum Yonasan: He knows how to play the harp. Radak - Menagen is in place of Makor (the infinitive Lenagen).
