Ionian the tonic is one. The semitones are between the third and fourth and the seventh and eighth degrees.
Lydian the tonic is four. The semitones are between the fourth and fifth and the seventh and eighth degrees.
Quaver Americans use eighth note.
Time Values Crotchet : Americans use 'quarter note '. Minum : Americans use 'half note '.
Crotchets and minums have their stems going upwards on the right of the note when the pitch is below the middle line of the stave, and downwards on the left for notes that are above the middle line. Semibreve : Americans use 'whole note'.
The semibreve lasts as long as two minums or four crotchets. Quaver : Americans use eighth note
a note that is half as long as a quarter note. There are eight eighth notes to a whole note. A single eighth note is written with the tail to the right of the stem, whether the stem goes up or down. Two eighth notes together have their tails joined.
