| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| when was midi developed | 1.91 | 0.5 | 4559 | 88 | 23 |
| when | 1.47 | 0.2 | 6540 | 71 | 4 |
| was | 0.69 | 0.8 | 7636 | 1 | 3 |
| midi | 1 | 0.5 | 6153 | 5 | 4 |
| developed | 0.1 | 0.9 | 9747 | 26 | 9 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| when was midi developed | 1.1 | 0.2 | 1089 | 76 |
