Examples from literature

• Every musician understands this principle: it requires longer to sing a half note than it does an eighth note. 
• In the transcription they are indicated by the usual musical symbol,—a small eighth note with a slanting stroke through the hook. 
• Notice how much difficulty this equal playing of the triplets occasions to the right hand, which moves in even eighth notes. 
• We have eighth notes, quarter notes, half notes, etc. Moreover, the signature of the music as indicated by the sharps or flats changes the whole situation. 
• You observe that often there are even eighth notesin the treble, while in the bass there are even triplet eighth notes.