It's funny.....these may be facts but I'd never want 2 listen 2 any of those songs.

Joni Mitchell,

The song "Both Sides Now" alone was covered by 647 artists, and that's only one of her songs, here's a list in descending order of most covered...

1) Both Sides Now (647 times)
2) Big Yellow Taxi (252)
3) Woodstock (194)
4) River (180)
5) The Circle Game (149)
6) A Case Of You (133)
7) Chelsea Morning (85)
8) All I Want (64)
9) Urge For Going (64)
10) Carey (59)
11) Twisted (58)
12) The Dry Cleaner From Des Moines (42)
13) For Free (41)
14) Blue (38)
15) Help Me (38)
16) Free Man In Paris (32)
17) Goodbye Pork Pie Hat (31)
18) This Flight Tonight (31)
19) You Turn Me On (I'm A Radio) (30)
20) Black Crow (27)
21) You're So Square Baby, I Don't Care (27)
22) Night Ride Home (24)
23) Amelia (23)
24) I Don't Know Where I Stand (23)
25) Michael From Mountains (22)
26) Night In The City (20)
27) Little Green (19)
28) Edith And The Kingpin (18)
29) I Had A King (17)
30) Rainy Night House (16)

There are more, but point made...