Can you explain the lesson behind Sai Baba's comments to Das Ganu about his clothing for the kirtan?

The story of Das Ganu in Chapter 15 provides a powerful lesson about the nature of true devotion. When Das Ganu prepared to perform a kirtan, he dressed elaborately in a tunic (angarkha), a shoulder cloth (uparne), and a turban. Upon seeing him, Baba remarked, "Bravo! A bridegroom has been decked out now!" and questioned the necessity of such attire, stating, "We do not need all that." This interaction teaches that genuine devotion and service to God do not require external pomp or sophisticated appearances. Baba emphasized sincerity over showmanship. The true essence of the kirtan lies in the devotion it inspires, not in the performer's fancy dress, a principle reinforced by the description of a successful kirtan where the performer wore only simple cloths.