For both the Thirteen and seven string lyres, the first (lowest) note is tuned to the D above middle C.
The remaining notes are:
Thirteen string: E - F - G - A - B - C1 - D1 - E1 - F1 - G1 - A1 - B1
Seven string: E - G - A - B - D1 - E1
Each lyre can be tuned using traditional methods or a 'tuning monochord'.
A 'tuning monochord' is a single stringed instrument, with frets set to match each of the lyre's notes. They are available through Nisargam.