Music by Numbers

1970:
Floppy disc was invented.

1971:
The microprocessor is introduced.
George Harrison organized the first benefit concert, Concert for Bangladesh.

1973:
Music business had become a $2 billion/year industry (approximately the size of the film and sports industries combined). Mergers, joint ventures, and distribution deals expanded the music business and consolidated the economic power.

1974:
Top four record companies account for over 50% of all records and tapes sold.

1976:
Apple Computers is founded.

1979:
The Who Concert Tragedy: December 3, 1979. 11 people were trampled to death outside the Riverfront Coliseum in Cicinnatti.