1. The custom to sing niggunim of the Nesi’im on Rosh Hashanah effects an essential bond between ourselves and them. By connecting to the “heads of the thousands of Israel” on the “head of the year,” the Divine service of Torah and mitzvos is enhanced throughout the year.
2. The sacrifices of Rosh Hashanah included Temidin and Musafin. Every person has the choice, depending on the circumstances, to choose whichever path of Divine service he desires. The Rambam shows us how that choice may fit in perfectly with the will of G‑d. There must be joy in the fulfillment of mitzvos.
