Rolling Stone magazine unleashed their latest "greatest" list today, this one focusing on the best singers of all-time (not necessarily rock, by the way).The list was compiled after Rolling Stone polled a bunch of artists, journalists and music industry folks to name their top 20 singers.

A hefty 72 of the artists listed are Rock and Roll Hall of Famers. That leaves just 28 artists who are not yet in. Quite a few of these are primarily known as country singers (George Jones, Merle Haggard, Dolly Parton, Willie Nelson, Patsy Clline), and generally wouldn't be inducted into the Rock and Roll Hall of Fame anyway, although there have been exceptions (like Hank Williams and Johnny Cash). There are seven artists who aren't eligible yet, but a few of them are likely future inductees, like Nirvana, Radiohead and Guns N’ Roses.

Of the notable snubs on the list, Nina Simone ranks the highest, but many rock fans will likely point to Steve Perry's inclusion on this list as another reason for Journey's induction.

The full list:

1. Aretha Franklin
2. Ray Charles
3. Elvis Presley
4. Sam Cooke
5. John Lennon
6. Marvin Gaye
7. Bob Dylan
8. Otis Redding
9. Stevie Wonder
10. James Brown
11. Paul McCartney
12. Little Richard
13. Roy Orbison
14. Al Green
15. Robert Plant
16. Mick Jagger
17. Tina Turner
18. Freddie Mercury
19. Bob Marley
20. Smokey Robinson
21. Johnny Cash
22. Etta James
23. David Bowie
24. Van Morrison
25. Michael Jackson
26. Jackie Wilson
27. Hank Williams
28. Janis Joplin
29. Nina Simone *
30. Prince
31. Howlin' Wolf
32. Bono
33. Steve Winwood
34. Whitney Houston *
35. Dusty Springfield
36. Bruce Springsteen
37. Neil Young
38. Elton John
39. Jeff Buckley
40. Curtis Mayfield
41. Chuck Berry
42. Joni Mitchell
43. George Jones *
44. Bobby "Blue" Bland
45. Kurt Cobain * [inducted in 2014]
46. Patsy Cline *
47. Jim Morisson
48. Buddy Holly
49. Donny Hathaway *
50. Bonnie Raitt
51. Gladys Knight
52. Brian Wilson
53. Muddy Waters
54. Luther Vandross *
55. Paul Rodgers *
56. Mavis Staples
57. Eric Burdon **
58. Christina Aguilera *
59. Rod Stewart
60. Björk *
61. Roger Daltrey
62. Lou Reed
63. Dion
64. Axl Rose * [inducted in 2012]
65. David Ruffin
66. Thom Yorke *
67. Jerry Lee Lewis
68. Wilson Pickett
69. Ronnie Spector
70. Greg Allman
71. Toots Hibbert *
72. John Fogerty
73. Dolly Parton *
74. James Taylor
75. Iggy Pop ** [inducted in 2010]
76. Steve Perry *
77. Merle Haggard *
78. Sly Stone
79. Mariah Carey *
80. Frankie Valli
81. John Lee Hooker
82. Tom Waits *[inducted in 2011]
83. Patti Smith
84. Darlene Love * [inducted in 2011]
85. Sam Moore
86. Art Garfunkel
87. Don Henley
88. Willie Nelson *
89. Solomon Burke
90. The Everly Brothers
91. Levon Helm
92. Morrissey *
93. Annie Lennox *
94. Karen Carpenter *
95. Patti LaBelle *
96. B.B. King
97. Joe Cocker *
98. Stevie Nicks
99. Steven Tyler
100. Mary J. Blige *

* = not yet in the Rock and Roll Hall of Fame
** = nominated in 2009