The 10 composers

.               אדם - מלכי צדק - אברהם - משה - דוד-שלמה -אסף What do these seven people have in common with the בני קרח?   THE 10 AUTHORS OF TEHILLIM  A) The first Rashi on Tehillim writes, "The 10 people who said (authored) Sefer Tehilim are, אדם -  מלכי צדק - אברהם - משה-  דוד-  שלמה-  אסף -  3 בני קרח B) There are different מסורות as to how many Kapitlach (פרשיות) Tehillim consists of. a) Our מסורה is 150. b) The Yerushalmi (Shabbos #16 Hl.1) says there are 147 פרשיות. c) The מאירי on Tehillim has 151 C) According to Rashi the last Kapital Tehillim Dovid wrote was Kapital 72 and ended it with the Pasuk כלו תפלות דוד בן ישי D) The Kapital למנצח לבני קרח we say 7 times before the תקיעות on Rosh Hashana, was written by the 3 sons of קרח