In Carnatic music, a mudra is a unique signature or symbolic phrase that composers include in their compositions to identify authorship or devotion.
Mudra of Patnam Subramanya Iyer:
He used the mudra "Venkatesa" in his kritis.
This refers to Lord Venkatesa of Tirupati and reflects his devotional leanings.
Mudra of Ramnad Srinivasa Iyengar:
He used the mudra "Srinivasa" in his compositions.
This was both a personal name reference and a devotional invocation.
Significance:
Mudras help identify the composer of a kriti and often express the composer’s devotion or philosophical beliefs.