Swami often said, "My Life is my message." He has also demonstrated this on several occasions.
Here is a wonderful video, where the famous devotional bhajan singer Sri.Roopak Sharma can be seen sharing an interesting anecdote from his days as a student of Sri Sathya Sai Institute of Higher Learning, Puttaparthi. His dream was to sing a bhajan in front of Swami. It was realised on his birthday when he had the opportunity to sing "Bhajana Bhina Sukh Shanti Nahin.....".
Swami, the all-knowing, took upon the task of learning the bhajan Himself, line by line. Sri.Sharma says Swami practised the lines diligently and kept asking him if His singing was correct. This totally humbled Sri.Sharma as he knew very well that Swami being Nadaswaroopa, a personification of Music Himself, need not learn any bhajan from him or anyone else!
Sri.Sharma says this was Swami's way of leading by example how singers should learn and practice a bhajan and perfect it.
From the video given here, let us learn from Swami the importance of perfecting the melody of a bhajan through practice and the valuable lesson of humility!