Sirach 47:9

9 He set singers also before the altar, that by their voices they might make sweet melody, and daily sing praises in their songs.

Sirach 47:9 In-Context

7 For he destroyed the enemies on every side, and brought to nought the Philistines his adversaries, and brake their horn in sunder unto this day.
8 In all his works he praised the Holy One most high with words of glory; with his whole heart he sung songs, and loved him that made him.
9 He set singers also before the altar, that by their voices they might make sweet melody, and daily sing praises in their songs.
10 He beautified their feasts, and set in order the solemn times until the end, that they might praise his holy name, and that the temple might sound from morning.
11 The Lord took away his sins, and exalted his horn for ever: he gave him a covenant of kings, and a throne of glory in Israel.

The Brenton translation of the Septuagint is in the public domain.