Uranus and Neptune are made primarily of hydrogen compounds, with smaller traces of hydrogen, helium, metal and rock. The most common hydrogen compounds are methane (CH4), ammonia (NH3), and water (H2O). The farther away a planet is from the Sun, the cooler its atmosphere will be.
Musical.ly is a popular app for creating 15-second music videos. How it works is kids select snippets of popular songs and record themselves singing, lip-syncing or dancing. Some kids skip the music and perform 15-second comedy skits.
Polyphony is a musical composition that uses simultaneous but multiple independent melodic parts, lines, or voices. During the Renaissance era, polyphonic music became widespread throughout in both sacred and secular settings due to the revival of interest in art and literature. The most favored styles of music during this period was the motet, for sacred topics, and the madrigal, for social themes.