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(Elton John, LA Times file photo)

The age of disco was dawning in this week’s rundown from Billboard’s Hot 100 chart archives. Groovy.

CLICK HERE to watch videos for the top 10 songs this week in 1974: Elton John’s “Bennie and the Jets,” the Jackson 5’s “Dancing Machine,” Grand Funk Railroad’s “The Loco-Motion” and more.