Where did this sound source come from?

He loves playing string instruments.

He was fascinated by the beautiful timbre of string music.

He went to the library to find the original.

Reducing energy consumption helps prevent global warming.

We need to find new ways to decrease energy consumption.

Let's make the most of existing resources.

Please explain the current state of this building in detail.

Modern man is heavily dependent on technology.

Please tell me your current location.