Got those scales under your fingers?
Here's some backing tracks in different styles for my students to Jam along with, click on the links... enjoy!
Soulful ballad, D natural Minor (aka Aeolian mode) will have your guitar weeping in your hands.
Not for the faint hearted, Fast rock in E, use E Minor Pentatonic, Em Blues or E natural minor (E major will not work here despite the title)
B.B.King Style, leave lots of space, question & response playing works really well here.
Grab your partner by the hand! G major Pentatonic will work all over this, more experienced players aim to follow the chord changes by Targeting the chord tones)
Try lots of question and response phrasing, Pentatonic minor/major/blues scales will all work fine here, good use of Dominant 7th arpeggios will highlight the chord tones)