Jamieson, Fausset and Brown on Psalms 142:1

PSALM 142

Psa 142:1-7. Maschil--(See on Psa 32:1, title). When he was in the cave--either of Adullam (1Sa 22:1), or En-gedi (1Sa 24:3). This does not mean that the Psalm was composed in the cave, but that the precarious mode of life, of which his refuge in caves was a striking illustration, occasioned the complaint, which constitutes the first part of the Psalm and furnishes the reason for the prayer with which it concludes, and which, as the prominent characteristic, gives its name.

1. with my voice--audibly, because earnestly.