Who were the devotees from Madras mentioned in the text, and what was their experience in Shirdi?

As narrated in Chapter 29, a group of devotees from the Madras region (now Chennai) came to Shirdi for Sai Baba's darshan while on a larger pilgrimage to Kashi. This group, which belonged to the Ramdasi sect, was renowned for their devotional singing. Upon taking darshan of Sai, they attained a sense of peace and decided to stay near him for several days, performing their enthusiastic devotional singing regularly. In an instance of his grace, Baba gave this specific group eight rupees and eight annas, an act which pleased their minds greatly. Their story illustrates the type of visitor Baba attracted and his personal interactions with them.