This is one of the best hendrix tunes. This tab is for the version that was played on
years eve at the filmore east.
Tune down half a step
(Eb, Ab, Db,Gb,Bb an Eb)
intro and verse
eb|----------------------------------------------|
Bb|----------------------------------------------|
Gb|----------------------------------10b~--------|
Db|---12-12-12-10-12-10--------------10b~--------|
Ab|---------------------12-11-10-----------------|
Eb|------------------------------10--------------|
[ Tab from: https://www.guitartabs.cc/tabs/j/jimi_hendrix/who_knows_tab_ver_3.html ]
or you could do it like this
eb|----------------------------------------------|
Bb|----------------------------------------------|
Gb|----------------------------------10b~--------|
Db|---12-12-12-10-12~----------------10b~--------|
Ab|---------------------12-11-10-----------------|
Eb|------------------------------10--------------|
Later on as the song goes on you play it an octave lower
eb|----------------------------------------------|
Bb|------------------------10b~------------------|
Gb|------------------------10b~------------------|
Db|----------------------------------------------|
Ab|--5-5-5-3-5-3---------------------------------|
Eb|--------------5~-4~-3~------------------------|
As for the solo do what you like in the A minor blues scale
which is: (these are the fret numbers for where you solo
eb|578 10 12
Bb|578 10 12
Gb|5789 11
Db|57
Ab|567
Eb|58
Eb|