- ‘Let It Be’, Beatles split, 1970.

- A Clockwork Orange prophases a grim future for youth culture and its victims, 1971.

- After the seemingly unending economic boom of the ‘60s, ‘stagflation’ sets in throughout West. In UK strikes and declining supplies of coal lead to ‘3 Day Week’. ‘Oil Shocks’ add to the woes.

- Fashion leaps from ever shorter mini to maxi and then to ‘hot pants’ as women struggle to remain trendy.

- Last American ground troops leave Vietnam in 1973. President Nixon proclaims ‘peace with honour’ but South Vietnam defeated in 1975 – and Nixon impeached, then resigns following Watergate scandal.

- Proto-Punk/post-modern Rocky Horror Show musical opens in London, 1973.

- Barcodes introduced in 1974. VHS video format introduced in 1976. Apple II, the first preassembled personal computer goes on sale in 1977 – the same year Microsoft set up.

- 1975: Little Jimmy Osmond’s ‘Long Haired Lover from Liverpool’, Captain & Tennille’s ‘Love Will Keep Us Together’ and The Bay City Roller’s ‘Bye Bye Baby’ suggest that pop music has lost its R&R roots.

- 1976: Malcolm McLaren and Vivienne Westwood’s controversial clothing shop SEX branches out into the music industry by forming a band called The Sex Pistols.

- 1977: Queen Elisabeth II’s Silver Jubilee celebrated in song by release of The Sex Pistols’ ‘God Save the Queen’.

- The world catches Saturday Night Fever, 1978.

- First British female Prime Minister Margaret Thatcher starts shift to the Right.

- The Buggles 1979 hit ‘Video Killed the Radio Stars’ sees a more visual future for pop music.