Timeline
| 1943 | Thomas Bell is born in Philadelphia, Pennsylvania |
| 1959 | Joins Kenny Gamble's harmony group, The Romeos |
| 1965 | Hired as a staff writer and touring conductor for singer Chubby Checker |
| 1967 | After leaving Checker's company, signs as a session pianist with Cameo Records, where he first works with the local soul group, the Delfonics |
| 1968 | Joins the Delfonics' new record label as a producer on their first album. The album included the smash hit LA LA MEANS I LOVE YOU. |
| 1968 | LA LA MEANS I LOVE YOU reaches #4 on the pop charts with a recording by the Delfonics |
| 1970 | The Delfonics recording of DIDN'T I BLOW YOUR MIND THIS TIME reaches #10 on the pop charts |
| 1972 | The Stylistics recording of BETCHA BY GOLLY WOW reaches #3 on the pop charts |
| 1972 | I'LL BE AROUND reaches #3 on the pop charts with a recording by The Spinners |
| 1972 | The Stylistics recording of I'M STONE IN LOVE WITH YOU reaches #10 on the pop charts |
| 1972 | YOU ARE EVERYTHING reaches #9 on the pop charts with a recording by the Stylistics |
| 1972 | Produces the debut album by the Stylistics which includes his songs BETCHA BY GOLLY WOW and YOU ARE EVERYTHING |
| 1972 | Producer and arranger on the O'Jays' album, Backstabbers |
| 1973 | BREAK UP TO MAKE UP reaches #5 on the pop charts with a recording by the Stylistics |
| 1973 | The Spinners' recording of GHETTO CHILD reaches the top thirty on the pop charts |
| 1973 | I'M DOING FINE NOW reaches #17 on the pop charts with a recording by New York City |
| 1973 | ROCKIN' ROLL BABY reaches #14 on the pop charts with a recording by the Stylistics |
| 1973 | Produces the Spinners' debut album which includes his songs I'LL BE AROUND and GHETTO CHILD |
| 1973 | Produces Johnny Mathis' album I'm Coming Home |
| 1974 | The Spinners' recording of I'M COMING HOME reaches the top twenty on the pop charts |
| 1974 | YOU MAKE ME FEEL BRAND NEW reaches #2 on the pop charts with a recording by the Stylistics |
| 1974 | Produces the Spinners' album Mighty Love |
| 1975 | Produces the Spinners' album Pick of the Litter |
| 1975 | Wins the Grammy award for Producer of the Year for Mighty Love |
| 1976 | RUBBERBAND MAN reaches #2 on the pop charts with a recording by the Spinners |
| 1977 | Collaborates with Elton John. The sessions were released on the EP Mama Can't Buy You Love 20 years after they were recorded. |
| 1981 | Tierra's cover recording of the 1968 #4 hit song LA LA MEANS I LOVE YOU reaches #72 on the pop charts |
| 1982 | Produces two albums for Deniece Williams |
| 1989 | New Kids on the Block's cover recording of the 1970 top ten song DIDN'T I BLOW YOUR MIND THIS TIME reaches #8 on the pop charts |
| 1991 | Cynthia's cover of the 1973 #5 hit song BREAK UP TO MAKE UP reaches #70 on the pop charts |
| 1996 | Prince's cover of the 1972 #3 hit song BETCHA BY GOLLY WOW reaches #31 on the pop charts |
| 2006 | Inducted in the Songwriters Hall of Fame |