According to 1 Chronicles 6:33, the temple singer Heman was a grandson of which prophet?

Answer: Samuel

Heman the singer, a Kohathite, was the son of Joel, the son of Samuel, the son of Elkanah, the son of Jeroham.

“These are the men who served, together with their sons. From the Kohathites: Heman the singer, the son of Joel, the son of Samuel, the son of Elkanah, the son of Jeroham, the son of Eliel, the son of Toah,”— 1 Chronicles 6:33-34 (BSB)