Index - I
| iabs | Musicology.Core |
| ic | Musicology.Core |
| ICOf | Musicology.Core, Musicology.Core |
| Identifiable | Musicology.Core |
| IdOf | Musicology.Core |
| ImperfectInterval | Musicology.Core |
| Impf | Musicology.Core |
| InnerSpace | Musicology.Core |
| inSum | Musicology.Core |
| inSum2 | Musicology.Core |
| internalOctaves | Musicology.Core |
| Interval | Musicology.Core |
| interval | Musicology.Core |
| IntervalClass | Musicology.Core |
| intervalL | Musicology.Core |
| IntervalOf | Musicology.Core |
| IOf | Musicology.Core, Musicology.Core |
| isOff | Musicology.Core |
| isOn | Musicology.Core |
| isStep | Musicology.Core |