Paper clips can be used in two ways to prepare the strings of the harp. Fixing the clip on the string creates a gong-like effect similar to hair clips. However, when the string is plucked the paper clips fly very easily off the string. In order to stay on the string the clip must be very large and the string can not be played forcefully. 

A more secure effect is to hang the paper clips on the strings. The clips create a delicate buzzing sound when the string is played.

Fixing the paper clip on the string creates a gong like sound while hanging the paper clip on the string creates a delicate buzzing sound.

A verbal explanation is necessary.

The whole harp.