Billboard ranked the top 100 songs since the creation of their Hot 100 list in 1958. The list is based on airplay and sales. Here are the songs in chart form.
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Mixed Feelings of Happiness and Meaning
Happiness and meaning do not always travel together. Sometimes we need to pursue meaning without the happiness, and vice versa.
Sleep Schedule, From the Inconsistent Teenage Years to Retirement
From the teenage years to college to adulthood through retirement, sleep is all over the place at first but then converges towards consistency.