He uses the music to drown out other noises around him.

The distal tier of cells has a wider acceptance angle than the proximal tier and different neuronal wiring (distal photoreceptors are wired into the lamina, while proximal photoreceptors are wired into the medulla), as well as a different spectral receptor composition.

Paragraph five deals with (A*)-algebras and contains a proof of a vector-valued variant of Wiener's Tauberian theorem.

He needed a hammer, nails, screws, nuts, bolts and other assorted hardware, so he went to the hardware store.