How many songs did Robert Johnson record?

Dan the Man is exactly right. 29 songs, 41 tracks.
Here is the list:
Disk 1
1. Kindhearted Woman Blues
2. Kindhearted Woman Blues - (alternate Version)
3. I Believe I'll Dust My Broom
4. Sweet Home Chicago
5. Rambling On My Mind
6. Rambling On My Mind - (alternate Version)
7. When You Got A Good Friend
8. When You Got A Good Friend - (alternate Version)
9. Come On In My Kitchen
10. Come On In My Kitchen - (alternate Version)
11. Terraplane Blues
12. Phonograph Blues
13. Phonograph Blues - (alternate Version)
14. 32-20 Blues
15. They're Red Hot
16. Dead Shrimp Blues
17. Cross Road Blues
18. Cross Road Blues - (alternate Version)
19. Walking Blues
20. Last Fair Deal Gone Down

Disk 2
1. Preaching Blues (up Jumped The Devil)
2. If I Had Posession Over Judgment Day
3. Stones In My Passway
4. I'm A Steady Rollin' Man
5. From Four Till Late
6. Hellhound On My Trail
7. Little Queen Of Spades
8. Little Queen Of Spades - (alternate Version)
9. Malted Milk
10. Drunken Hearted Man
11. Drunken Hearted Man - (alternate Version)
12. Me And The Devil Blues
13. Me And The Devil Blues - (alternate Version)
14. Stop Breakin' Down Blues
15. Stop Breakin' Down Blues - (alternate Version)
16. Traveling Riverside Blues
17. Honeymoon Blues
18. Love In Vain
19. Love In Vain - (alternate Version)
20. Milkcow's Calf Blues
21. Milkcow's Calf Blues - (alternate Version)

How is this better than my answer? He says I was right and then posted the list that I provided a link to as my source. Oh well, I'm just glad that other people appreciate good music (blues). Report It

I am not sure but i think it was in the 20's either 23 or 26. If i do find out I'll edit.

29, but they recently found another, so 30. These are including Alternate Takes.

I heard it was 37.

29 or 30.

There are alternate takes to a lot of them, so it is 'more' as some of the versions do have differences.

He recorded 29 songs with alternate versions of 12 of the songs. If you get the "Complete Recordings of Robert Johnson" on the Columbia/Legacy label, it will have all 41 tracks on it.