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Table 1 Number of songs per year and average MIR and lyric vector distances across all genres

From: Novelty and cultural evolution in modern popular music

Year

# of Songs

Avg. MIR Vector Distance

Avg. Lyric Vector Distance

1974

464

3.45

13.45

1975

495

3.39

13.11

1976

468

3.47

13.51

1977

412

3.42

13.27

1978

422

3.33

13.78

1979

435

3.30

14.18

1980

428

3.36

13.52

1981

376

3.25

13.40

1982

397

3.32

13.62

1983

427

3.23

13.83

1984

414

3.23

14.24

1985

391

3.09

14.20

1986

384

3.11

13.99

1987

381

3.06

14.04

1988

371

3.03

13.86

1989

382

3.08

14.09

1990

353

3.03

14.06

1991

353

3.15

13.95

1992

344

3.21

14.12

1993

331

3.23

14.64

1994

318

3.33

14.36

1995

339

3.18

14.38

1996

304

3.22

14.06

1997

329

3.27

14.10

1998

330

3.36

14.23

1999

313

3.38

14.40

2000

313

3.28

14.57

2001

297

3.34

14.86

2002

291

3.29

14.68

2003

302

3.41

14.60

2004

303

3.36

14.68

2005

341

3.41

14.28

2006

361

3.31

14.52

2007

337

3.38

14.88

2008

387

3.31

14.76

2009

429

3.30

14.71

2010

474

3.34

14.71

2011

487

3.27

14.65

2012

369

3.17

14.75

2013

174

3.08

14.38