# For the chief musician

"This is for the director of music to use in worship"

# set to Muth Labben

This may refer to a style of music.

# I will give thanks to Yahweh with my whole heart

"Yahweh, I will give thanks to you with all my heart" 

# all your marvelous deeds

"all the marvelous things you do" or "all the marvelous things you have done"