Downtune half a step.
[ Tab from: https://www.guitartabs.cc/tabs/j/john_frusciante/for_air_tab.html ]
|---------------------------7---------5------9--------7------|
|---------------------5-------7---7S8---8S10---10-----7------|
|---------6b7-6b7-4------------------------------------------|
|-----4-------------5---4-4----------------------------------|
|-------------------------------5----------------------------|
|-2-2---2-----------------------------------------7-7---7----|
|-------------------------7---------------------------|
|-------------------------7---------------------------|
|-----------------------------------------------------|
|-7p5-----7p5-----7p5----------7p5---7p5-------4------|
|-----5-5-----5-5------------------5-----5------------|
|---------------------7-7---7--------------2-2---2----|
You get the idea.
