fetched > [which had been imported]
5 That all the house did sweat with great array:
That > [So that] sweat > {Exude drops of moisture; hence: exhale fragrance} array > {State of special preparation for festivities}
6 And all the while sweet Music did apply
Music > (Music personified; the art of the Muses)
7 Her curious skill, the warbling notes to play,
curious > skilled; elaborate; exquisite
8 To drive away the dull melancholy;
melancholy > (Cf. 105.3:5)
9 The whiles one sang a song of love and jollity.