Watch the Down and Out online guitar lesson by Jeff McErlain from Essentials: Chord Tone Soloing
I've saved the most difficult piece until last - although it's quite a common blues tune. "Nobody Knows You When You're Down and Out" has been around for quite a long time, with countless versions. It's also a cool 8 bar blues. The first version I heard is on Layla and Other Assorted Love Songs record from Derek and the Dominos. Since then, Eric Clapton has rerecorded it as an acoustic track, which became a staple in his set along with "Key to the Highway".
The thing about this song is that it actually changes keys a number of times, so there are lots of opportunities to hit wrong notes! This is where chord tone soloing is a lifesaver, because learning the proper scales to play over all these changes is quite demanding and actually the wrong way to think about things. You can kind of make it through the song using the C major pentatonic scale, but that's not going to really work, so like every other example in this course, LEARN THE CHORD PROGRESSION IN AS MANY POSITIONS AS YOU CAN. Sorry about the all caps but I needed to make that point clear!