Song: "Ain't Understanding Mellow"
Artist: Jerry Butler & Brenda Lee Eager
Peak position on the Cashbox Singles chart: #24
Number of weeks on the Cashbox Singles chart: 18
(16 weeks in the Top 100)
Weekly data:
| Week ending | Rank | Title | Artist | Label |
|---|---|---|---|---|
| December 11, 1971 | 130 | Ain't Understanding Mellow | Jerry Butler & Brenda Lee Eager | Mercury 73255 |
| December 18, 1971 | 114 | Ain't Understanding Mellow | Jerry Butler & Brenda Lee Eager | Mercury 73255 |
| December 25, 1971 | 85 | Ain't Understanding Mellow | Jerry Butler & Brenda Lee Eager | Mercury 73255 |
| January 1, 1972 | 79 | Ain't Understanding Mellow | Jerry Butler & Brenda Lee Eager | Mercury 73255 |
| January 8, 1972 | 74 | Ain't Understanding Mellow | Jerry Butler & Brenda Lee Eager | Mercury 73255 |
| January 15, 1972 | 65 | Ain't Understanding Mellow | Jerry Butler & Brenda Lee Eager | Mercury 73255 |
| January 22, 1972 | 60 | Ain't Understanding Mellow | Jerry Butler & Brenda Lee Eager | Mercury 73255 |
| January 29, 1972 | 52 | Ain't Understanding Mellow | Jerry Butler & Brenda Lee Eager | Mercury 73255 |
| February 5, 1972 | 46 | Ain't Understanding Mellow | Jerry Butler & Brenda Lee Eager | Mercury 73255 |
| February 12, 1972 | 40 | Ain't Understanding Mellow | Jerry Butler & Brenda Lee Eager | Mercury 73255 |
| February 19, 1972 | 37 | Ain't Understanding Mellow | Jerry Butler & Brenda Lee Eager | Mercury 73255 |
| February 26, 1972 | 34 | Ain't Understanding Mellow | Jerry Butler & Brenda Lee Eager | Mercury 73255 |
| March 4, 1972 | 28 | Ain't Understanding Mellow | Jerry Butler & Brenda Lee Eager | Mercury 73255 |
| March 11, 1972 | 26 | Ain't Understanding Mellow | Jerry Butler & Brenda Lee Eager | Mercury 73255 |
| March 18, 1972 | 24 | Ain't Understanding Mellow | Jerry Butler & Brenda Lee Eager | Mercury 73255 |
| March 25, 1972 | 29 | Ain't Understanding Mellow | Jerry Butler & Brenda Lee Eager | Mercury 73255 |
| April 1, 1972 | 45 | Ain't Understanding Mellow | Jerry Butler & Brenda Lee Eager | Mercury 73255 |
| April 8, 1972 | 76 | Ain't Understanding Mellow | Jerry Butler & Brenda Lee Eager | Mercury 73255 |
Rankings greater than 100 are from the Cashbox 'Looking Ahead' charts.