Clara looked carelessly at the flat row of tubes cased in nickel-silver.
"Exhibition concert organ with forty reeds," said Jonah.

Again Clara looked at the instrument with a slightly disdainful air, as an organist would look at a penny whistle.
"Well, play something," she said with a smile.
Jonah breathed slowly into the reeds, up and down the scale, testing the compass of the instrument.

It was full and rich, unlike any that she had heard in the streets.

Presently he struck into a popular ballad from the music-hall, holding the organ to his mouth with the left hand.

With his right he covered the pipes to control the volume of sound as a pianist uses the pedals.