1)
Why was Azazyah not mentioned above?
1.
Malbim: He was not a gatekeeper.
2)
What is "ha'Sheminis"?
1.
'Rashi': it is a Kli Shir for certain Tehilim, e.g. "la'Menatze'ach Al ha'Sheminis" (Tehilim 12:1).
2.
Erchin 13b: In Yemos ha'Mashi'ach it will be a harp with eight strings. "La'Menatze'ach Al ha'Sheminis" refers to a harp of eight strings.
3.
Malbim: Perhaps it is a kind of tune.
