Often, the key to the blues is to take something simple and make it sound good. I think it's fair to say that this is true of Hideaway. Hideaway is a 12-bar blues instrumental in the key of E. An approximation of the first 12 bars is shown below (13 bars if you include the notes in bar 1, which actually precede the 12-bar segment). A few familiar variations are covered in the following pages. As you'll see, the song shifts between 12-bar segments played on the high strings and simple but catchy bass runs.
The main key to Hideaway is a move which is repeated throughout the song, a hammer-on on the 2nd fret of the 2nd string followed by the pluck on the open first string.
You can see this little move repeated many times in the example below, starting with the very beginning of the song (at the end of measure 1, leading into measure 2), repeated in measures 3, 5, 7, 9, and 11. Not so hard, eh?