Can you tell me about the group of devotees from Madras mentioned in Chapter 29?

According to Chapter 29, a group of devotees from the Madras region, now known as Chennai, came to Shirdi for Sai Baba's darshan. This group consisted of travelers who had spent the year engaged in devotional singing. They were on a pilgrimage to Kashi and made a stop at Shirdi on their way, having heard of Baba's fame as a great saint. The chapter also mentions another group, belonging to the Ramdasi sect, who performed devotional singing with great enthusiasm. Baba was pleased with their devotion and gave them a sum of eight rupees and eight annas.