A silverpoint drawing is used by dragging a silver rod or wire across a surface. This wire is usually called as a primer or gesso. It was used since the late Gothic/early Renaissance era.
Advantage: Renaissance artists used silver and occasionally lead point for preparatory sketches under their paintings and frescoes as well as for studies on paper.
Disadvantage: It is an unforgiving media because silverpoint lines are very difficult to erase, so fixing mistakes is not an easy task.
More than one staff can be grouped with a bracket or a brace to create a system. The bracket typically groups independent parts to form a system. In the example below, the voice parts (soprano, alto, tenor, and bass) are connected with the bracket to create visual grouping of the voice parts.
