I thought I would start this countdown with the Top 40 songs by the Biggest Acts of each decade which would be: 50's ELVIS PRESLEY. 60's THE BEATLES, 70's BEE GEES, 80's MICHAEL JACKSON and 90's MARIAH CAREY.  So here is the Top 40 of these great big Five acts who have had countless number ones songs, and Top 10 songs.

40 Return To Sender Elvis Presley '62

39 Yesterday - The Beatles '65

38 Can't Buy Me Love - The Beatles '64

37 You Are Not Alone - Michael Jackson '95

36 Without You/Never Forget You - Mariah Carey '94

35 My All - Mariah Carey '98

34 Too Much - Elvis Presley '57

33 Vision Of Love - Mariah Carey '90

32 Love Takes Time - Mariah Carey '90

31 How Can You Mend A Broken Heart - Bee Gees '71

30 I'll Be There - Mariah Carey '92

29 Too Much Heaven - Bee Gees '79

28 Let It Be - The Beatles '70

27 Beat It - Michael Jackson '83

26 Get Back - The Beatles w/Billy Preston '69

25 Stuck On You - Elvis Presley '60

24 Rock With You - Michael Jackson '80

23 She Loves You - The Beatles '64

22 Don't/I Beg Of You - Elvis Presley '58

21 It's Now Or Never - Elvis Presley '60

20 Black Or White - Michael Jackson '91

19 Billie Jean - Michael Jackson '83

18 Are You Lonesome Tonight? - Elvis Presley '60

17 How Deep Is Your Love - Bee Gees '77

16 Hero - Mariah Carey '93

15 I Want To Hold Your Hand - The Beatles '64

14 Night Fever - Bee Gees '78

13 (Let Me Be Your)Teddy Bear - Elvis Presley '57

12 Stayin Alive - Bee Gees '78

11 All Shook Up - Elvis Presley '57

10 Say, Say, Say - (Paul McCartney) & Michael Jackson '83

09 Jailhouse Rock/Treat Me Nice - Elvis Presley '57

08 Always Be My Baby - Mariah Carey '96

07 Heartbreak Hotel - Elvis Presley '56

06 Dreamlover - Mariah Carey '93

05 Fantasy - Mariah Carey '95

04 Love Me Tender - Elvis Presley '56

03 Hey Jude - The Beatles '68

02 Don't Be Cruel/hound Dog - Elvis Presley '56

01 One Sweet Day - Mariah Carey(w/Boyz II Men) '95