Use the wha pedal or the envelope filter one. Bassline by Ace from Gorillaz. [Verse] G|----------------------------------x-5-4-2----------------------| D|------------------------------------------5--------------------| A|--3-----2----------3-----2-------------------------------------| E|0-----0----------0-----0---------------------------------------| G|----------------------------------x-5-4-5-4--------------------| D|---------------------------------------------------------------| A|--5-----3----------5-----3-------------------------------------| E|0-----0----------0-----0---------------------------------------| [Chorus] G|---------------------------------------------------------------| D|---------------------------------------------------------------| A|--------------------------------2------------------------------| E|x-5-3-2-3-0---------------0-2-3---5----------------------------|