Music ministry

Beginning with this post, there could be some overlap or expansion on some of the previous posts from 1 + 2 Samuel and 1 + 2 Kings because 1 + 2 Chronicles covers the same period -- generally from David through the Babylonian conquest of Jerusalem.

1 Chronicles 6:31-47 - These are the men David put in charge of the music in the house of the LORD after the ark came to rest there. They ministered with music before the tabernacle, the Tent of Meeting, until Solomon built the temple of the LORD in Jerusalem. They performed their duties according to the regulations laid down for them.

Here are the men who served, together with their sons:
From the Kohathites:
Heman, the musician,
the son of Joel, the son of Samuel,

the son of Elkanah, the son of Jeroham,
the son of Eliel, the son of Toah,

the son of Zuph, the son of Elkanah,
the son of Mahath, the son of Amasai,

the son of Elkanah, the son of Joel,
the son of Azariah, the son of Zephaniah,

the son of Tahath, the son of Assir,
the son of Ebiasaph, the son of Korah,

the son of Izhar, the son of Kohath,
the son of Levi, the son of Israel;

and Heman's associate Asaph, who served at his right hand:
Asaph son of Berekiah, the son of Shimea,

the son of Michael, the son of Baaseiah,
the son of Malkijah, the son of Ethni,
the son of Zerah, the son of Adaiah,

the son of Ethan, the son of Zimmah,
the son of Shimei, the son of Jahath,
the son of Gershon, the son of Levi;

and from their associates, the Merarites, at his left hand:
Ethan son of Kishi, the son of Abdi,
the son of Malluch, the son of Hashabiah,
the son of Amaziah, the son of Hilkiah,

the son of Amzi, the son of Bani,
the son of Shemer, the son of Mahli,
the son of Mushi, the son of Merari,
the son of Levi.

Especially since I'm a musician myself, I wonder what duties were laid down for these musicians. I'm guessing they composed, sang, played, and taught. Perhaps they also invented -- instruments, music styles, notation methods....

I wonder if they made their living solely from music or if they had to have side jobs to make ends meet.

I wonder who determined what their duties would be. David himself was a musician, so he probably had a lot to say about it.

I wonder how many full-time musicians there were on average.

I wonder if (outside of duties directly related to scheduled worship) they kept regular office hours.