You can listen to the bhajan and learn how to sing it yourself. The words and their meaning are below along with the chords for harmonium accompaniment.
Bhajan # 157 in the Premananda Bhajans book
Great Gurudeva, you are All. You are the protector, you are compassionate, wise and strong. You are the divine and eternal Guru, your divine play is making us happy, but it is also facing us with the illusion we are living in. Beautiful and strong Guru, you are my mother and father. Glory to the Guru who is full of love and divine energy, who fills us with devotion! My Guru…
You are supreme bliss, discrimination, divine love and truth!