Song: "Let's Groove"
Artist: Earth, Wind & Fire
Peak position on the Cashbox Singles chart: #3
Number of weeks on the Cashbox Singles chart: 24
Weekly data:
| Week ending | Rank | Title | Artist | Label |
|---|---|---|---|---|
| October 3, 1981 | 79 | Let's Groove | Earth, Wind & Fire | ARC 02536 |
| October 10, 1981 | 64 | Let's Groove | Earth, Wind & Fire | ARC 02536 |
| October 17, 1981 | 53 | Let's Groove | Earth, Wind & Fire | ARC 02536 |
| October 24, 1981 | 46 | Let's Groove | Earth, Wind & Fire | ARC 02536 |
| October 31, 1981 | 39 | Let's Groove | Earth, Wind & Fire | ARC 02536 |
| November 7, 1981 | 31 | Let's Groove | Earth, Wind & Fire | ARC 02536 |
| November 14, 1981 | 26 | Let's Groove | Earth, Wind & Fire | ARC 02536 |
| November 21, 1981 | 17 | Let's Groove | Earth, Wind & Fire | ARC 02536 |
| November 28, 1981 | 13 | Let's Groove | Earth, Wind & Fire | ARC 02536 |
| December 5, 1981 | 6 | Let's Groove | Earth, Wind & Fire | ARC 02536 |
| December 12, 1981 | 3 | Let's Groove | Earth, Wind & Fire | ARC 02536 |
| December 19, 1981 | 3 | Let's Groove | Earth, Wind & Fire | ARC 02536 |
| December 26, 1981 | 3 | Let's Groove | Earth, Wind & Fire | ARC 02536 |
| January 2, 1982 | 3 | Let's Groove | Earth, Wind & Fire | ARC 02536 |
| January 9, 1982 | 3 | Let's Groove | Earth, Wind & Fire | ARC 02536 |
| January 16, 1982 | 4 | Let's Groove | Earth, Wind & Fire | ARC 02536 |
| January 23, 1982 | 5 | Let's Groove | Earth, Wind & Fire | ARC 02536 |
| January 30, 1982 | 7 | Let's Groove | Earth, Wind & Fire | ARC 02536 |
| February 6, 1982 | 9 | Let's Groove | Earth, Wind & Fire | ARC 02536 |
| February 13, 1982 | 16 | Let's Groove | Earth, Wind & Fire | ARC 02536 |
| February 20, 1982 | 34 | Let's Groove | Earth, Wind & Fire | ARC 02536 |
| February 27, 1982 | 59 | Let's Groove | Earth, Wind & Fire | ARC 02536 |
| March 6, 1982 | 72 | Let's Groove | Earth, Wind & Fire | ARC 02536 |
| March 13, 1982 | 85 | Let's Groove | Earth, Wind & Fire | ARC 02536 |
Rankings greater than 100 are from the Cashbox 'Looking Ahead' charts.