Complex sentence: "When I Said I Do" is a duet between country music singers Clint Black and Lisa Hartman Black that reached the top of the "Billboard" Hot Country Singles & Tracks chart.
Split into simpler sentences: When I Said I Do is the title of a song recorded by American country music singers Clint Black and Lisa Hartman Black as a duet. The song reached the top of the "Billboard" Hot Country Singles & Tracks chart.