"Baby, What You Want Me To Do (Live)" (Etta James)

"Baby, What You Want Me To Do" is a blues song written by Jimmy Reed that has been covered dozens of times by everyone from Bill Cosby to Elvis Presley on his 1968 NBC comeback special.  But the version that is the funkiest, grittiest, most gut bucket of them all is the live version by Etta James from her 1964 album Etta James Rocks the House.  
The album was recorded at The New Era Club in Nashville, TN, in late 1963 to showcase James's vocal prowess outside the studio and to prove that the 26-year-old singer had chops that extended beyond the pop material that had earned her chart success.  
The whole recording blazes with raw fire.  James tackles roadhouse boogie, rock & roll, and Chicago blues and successfully conquers all as she blazes her way through a sweaty set of 11 songs in about 40 minutes.  It's the definition of a desert island disc.
In particular, "Baby, What You Want Me To Do" nearly brings down the house.  (And it's only the second song of the performance.)
The track is the perfect combo of James, who is in top vocal form, being backed by equally talented musicians, and all of it getting captured by a sound guy who knew what the hell he was doing: the bass and lead guitars sound like you're sitting a foot from the stage.
If you do nothing else, listen to the stretch from 2:14 to the end.  The band gets a groove cooking that grabs ahold and just doesn't let loose.  (I smile every time the bass guitar begins matching the triplet pattern the drummer is playing on the ride cymbal.)  
Also, James rounds out the song with these growling, wordless vocalizations that mimic the sound of a saxophone wailing--it will make the hair stand up on your arm, guaranteed.
If there were any doubt that she was a baaaaaad gal before this song, that uncertainty is obliterated by the time she says "thank you very much."