Song: "Baby What A Big Surprise"
Artist: Chicago
Peak position on the Cashbox Singles chart: #4
Number of weeks on the Cashbox Singles chart: 17
Weekly data:
| Week ending | Rank | Title | Artist | Label |
|---|---|---|---|---|
| September 24, 1977 | 69 | Baby What A Big Surprise | Chicago | Columbia 10620 |
| October 1, 1977 | 44 | Baby What A Big Surprise | Chicago | Columbia 10620 |
| October 8, 1977 | 36 | Baby What A Big Surprise | Chicago | Columbia 10620 |
| October 15, 1977 | 26 | Baby What A Big Surprise | Chicago | Columbia 10620 |
| October 22, 1977 | 19 | Baby What A Big Surprise | Chicago | Columbia 10620 |
| October 29, 1977 | 16 | Baby What A Big Surprise | Chicago | Columbia 10620 |
| November 5, 1977 | 13 | Baby What A Big Surprise | Chicago | Columbia 10620 |
| November 12, 1977 | 11 | Baby What A Big Surprise | Chicago | Columbia 10620 |
| November 19, 1977 | 9 | Baby What A Big Surprise | Chicago | Columbia 10620 |
| November 26, 1977 | 7 | Baby What A Big Surprise | Chicago | Columbia 10620 |
| December 3, 1977 | 6 | Baby What A Big Surprise | Chicago | Columbia 10620 |
| December 10, 1977 | 4 | Baby What A Big Surprise | Chicago | Columbia 10620 |
| December 17, 1977 | 16 | Baby What A Big Surprise | Chicago | Columbia 10620 |
| December 24, 1977 | 44 | Baby What A Big Surprise | Chicago | Columbia 10620 |
| December 31, 1977 | 46 | Baby What A Big Surprise | Chicago | Columbia 10620 |
| January 7, 1978 | 53 | Baby What A Big Surprise | Chicago | Columbia 10620 |
| January 14, 1978 | 77 | Baby What A Big Surprise | Chicago | Columbia 10620 |
Rankings greater than 100 are from the Cashbox 'Looking Ahead' charts.