merriment > entertainment (cf. Midsummer-night's Dream III ii 146)
5 With wanton bards, and rhymers impudent,
wanton > playful; lewd rhymers > versifiers; "Chroniclers" (cf. 105.3) impudent > shameless, indelicate
6 All which together sang full cheerfully
full > very
7 A lay of love's delight, with sweet concent:
lay > song concent > harmony, accord
8 After whom marched a jolly company,
jolly > handsome; fine; jolly
9 In manner of a masque, enranged orderly.