A Minyan is 10 people. The minimum number required for Jewish public worship. This is derived from Numbers chapter 14, verse 27 where the word congregation is taken to refer to the 10 spies who gave an adverse report on the promised land. (Orthodox Jews only count males over the age of 13)
The following may be recited in any language: … the Shema, the Amidah, Grace after meals… (Mishnah Sotah 7, 1.)
Today it is the universal Jewish practice to use Aramaic in certain prayers or songs, for example, the Kol Nidrei, the Kaddish, the Chad Gadya in the Seder service, and Yah Ribon on a Friday night. Aramaic was the language people spoke and understood, as opposed to Hebrew (Lashon Ha-Kodesh), the holy tongue.
Psalm 92 says: It is good to give thanks to the Lord, to praise Your name, O God beyond all… with the ten-stringed lute, with the lyre and with the gentle sound of the harp.
Instrumental music was clearly played to accompany the worship in the temple; but since then some Jews stopped the practice because they felt they were in mourning for the loss of the building and the sacrifices there. It is particularly significant that the Bible states that this psalm was designated for use on the Sabbath.
A number of Settlements were set up in the East End from the late 19th Century onwards. At a time when there was much poverty, overcrowding and deprivation in the East End, some university students from Oxford and Cambridge established centres in the area for social work and education. When these centres were residential they were often called settlements. Some of the early settlements were Christian like the Oxford and Bermondsey Mission and others like Toynbee Hall were run by non-denominational social workers. Other Jewish Settlements were Brady and Stepney.