This wah-wah solo can be found on my band Artifex's latest demo - a song called "Alley cats". It is cool because it revolves around a single riff in E. Since there aren't any chord changes to rely on - the solo needs other qualities than the harmonic ones. Therefore, I focused on crazy sounding wah-wah licks, rhythmic ideas and MIGHTY SLIPPERS . Once again, this is a way to make a cool solo without relying on strong chord notes. The solo reaches it's peak with an exotic/progressive sounding phrase which I play in unison with my drummer and bass player.
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Backing Riff
e|---------------------------------------------------------|
b|---------------------------------------------------------|
g|---------------------------------------------------------|
d|---------------------------------------------------------|
a|-2-0-----------2-0------------------2-0------------------|
e|-----2-0-2-0-------2-0-2-0--2-0-2-0------3-2-3-2-3-2-3-2-| x 4
pm . ..... . ..... . ..... ...............
e|----------------------------------------------------------------------|
b|----------------------------------------------------------------------|
g|-----3-4-3------------------------------------------------------------|
d|-4-5-------5-4-2-----4-5-4-------------------4h5p4h5p4h5p4h5p4h5p4h5p-|
a|-----------------5-7-------7-5-4-2--4--5--7---------------------------|
e|----------------------------------------------------------------------|
There is no obvious "tonic center" (key) in this riff. However, the notes of the solo revolve around E minor.
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Eminor scale twelve positions (Red dots = root notes ):