A mudra (IAST: Mudrā; Sanskrit for sign or symbol) is a term woven into compositions in Indian classical music, particularly Carnatic music, that indicates the identity of the composer, a patron, the raga, tala, or style.
[2][3] A mudra is a pen name, nom de plume, or pseudonym adopted by a musician to serve as their sign of authorship in a musical composition.
All most every time, the penname is inserted in the wordings of the composition or poem in a artistically meaningful way.
Qawwal Bacche || 18th-century dhrupadiya in Rangile's Court.
[4] Sheikh Mazhar Sikandrabad Qawwal Bacche || Descendant of Tansen, dhrupadiya in Rangile's Court.