Song: "Wavelength"
Artist: Van Morrison
Peak position on the Cashbox Singles chart: #61
Number of weeks on the Cashbox Singles chart: 8
Weekly data:
| Week ending | Rank | Title | Artist | Label |
|---|---|---|---|---|
| September 23, 1978 | 87 | Wavelength | Van Morrison | Warner Bros. 8661 |
| September 30, 1978 | 79 | Wavelength | Van Morrison | Warner Bros. 8661 |
| October 7, 1978 | 75 | Wavelength | Van Morrison | Warner Bros. 8661 |
| October 14, 1978 | 72 | Wavelength | Van Morrison | Warner Bros. 8661 |
| October 21, 1978 | 70 | Wavelength | Van Morrison | Warner Bros. 8661 |
| October 28, 1978 | 64 | Wavelength | Van Morrison | Warner Bros. 8661 |
| November 4, 1978 | 61 | Wavelength | Van Morrison | Warner Bros. 8661 |
| November 11, 1978 | 91 | Wavelength | Van Morrison | Warner Bros. 8661 |
Rankings greater than 100 are from the Cashbox 'Looking Ahead' charts.