Step 1: Identifying the Incorrect Pair- Dashavatara is incorrectly paired with Tyagaraj. Dashavatara refers to a folk theatre form from Maharashtra, depicting the ten incarnations of Lord Vishnu, not related to Tyagaraj, who was a Carnatic music composer. Khanjiri Bhajan is correctly associated with Rashtrasant Tukdoji Maharaj, who used this form for devotional singing. Keertan is correctly attributed to Saint Namdev, a famous Marathi saint and poet known for devotional singing. Bharud is correctly associated with Saint Eknath, who developed this folk art form to spread spiritual messages.