Sounds at work

The gentle whirr of the AC
Monotones like the waves of sea.
The CPU buzzes on in pace,
Voices in subdued tones and bass.

The clicking of keys all through,
Everywhere these sounds imbue,
Whistling and humming I hear,
I try to guess who, before they appear.

Conversations, now are a lull,
Over their tasks, as they mull.
A moment of pause to take it all in,
A day of work, thus shall begin.