Who wrote the rap son I need you It was on BET and MTV in the 1980s soon after LL cool J's song I need love. It was a slow rap song and the artist played the piano in the video?

The rap song you're referring to is "I Need You" by the artist J. J. Fad. It was released in the late 1980s and gained popularity on platforms like BET and MTV. The song features a slow tempo and includes a piano accompaniment, aligning with the style you described.