Undoubtedly. Narayana Teertha, Chaitanya Swami used to get totally immersed while singing. While they were thus singing, the people with speech disorder would develop the ability to speak (mookam karoti vaachaalam) while the physically disabled people used to obtain the ability to walk.

Depending on the person, on his/her energy levels and on the degree to which he/she gets immersed in the song while singing, the results are based. There will be no benefit when the person sings merely to please other people. That will be classified as merely a show of talent.

(Bhaktimala 1991)