A monofocal lens does let you see well within a small range of distances, so if you were doing monovision, one eye being set
for distance and one eye being set
for near, you could set one eye at -1D, 1 diopter myopic, or perhaps 1.25D myopic, and that would likely let you see that sheet music well enough, with -1.5D being better but risking more trouble adapting to the monovision and reduction of stereopsis, 3D visual perception.