Thomas Edison's favorite invention was the phonograph. In 1877, he created a way to record sound on tinfoil cylinders by using two needles, one for recording and one for playback. The first words that Edison recorded were "Mary Had a Little Lamb." Ten years later, in 1887, Edison formed the Edison Phonograph Company to sell the phonograph to the public. This marked the beginning of the sound recording industry. The first records sold by the Edison and Columbia Phonograph Companies were on wax cylinders. These were brittle and broke easily. Columbia ceased production of wax cylinders in 1909 when discs became popular.