This is how I play the lead guitar in The Backseat. It's not perfect by any means but I think it works if you play along with the song. Tune the guitar down a full step. (h) = Harmonic INTRO: e-------------------------------------------------------------------------------------| B-------------------------------------------------------------------------------------| G-------------------------------------------------------------------------------------| D-11-11-11-11-11-11-13-13-14-14-14-14-14-14-13-13-14-14-16-16-16-16-16-16-14-14-14-14-| A-------------------------------------------------------------------------------------| E-------------------------------------------------------------------------------------| e-----------------------------------------------------------------------------------| B-----------------------------------------------------------------------------------| G-----------------------------------------------------------------------------------| D-13-13-14-13-11-11-11-11-11-11-13-9-9-9-9-9-9-11-11-13-13-11--9-11--13--14--13-14--| A-----------------------------------------------------------------------------------| E-----------------------------------------------------------------------------------| VERSE 1 e-----------------------------------------------------------------------------------| B-----------------------------------------------------------------------------------| G-----------------------------------------------------------------------------------| D-14-14-14-14-14-14-14-14-13-13-13-13-11-11-13-13-----------------(x10)-------------| A-----------------------------------------------------------------------------------| E-----------------------------------------------------------------------------------| CHORUS 1 e---12(h)--------------12(h)------------------------12(h)---------------------------| B--------12(h)-------------12(h)----------------12(h)-------------------------------| G-----------------------------------------------------------------------------------| D-----------------------------------------------------------------------------------| A-----------------------------------------------------------------------------------| E-----------------------------------------------------------------------------------| e-------------------------------------------------------------------------------------| B-------------------------------------------------------------------------------------| G-------------------------------------------------------------------------------------| D-11-11-11-11-11-11-13-13-14-14-14-14-14-14-13-13-14-14-16-16-16-16-16-16-14-14-14-14-| A-------------------------------------------------------------------------------------| E-------------------------------------------------------------------------------------| e-----------------------------------------------------------------------------------| B-----------------------------------------------------------------------------------| G-----------------------------------------------------------------------------------| D-13-13-14-13-11-11-11-11-11-11-13-9-9-9-9-9-9-11-11-13-13-11--9-11--13--14--13-14--| A-----------------------------------------------------------------------------------| E-----------------------------------------------------------------------------------| VERSE 2 e-----------------------------------------------------------------------------------| B-----------------------------------------------------------------------------------| G-----------------------------------------------------------------------------------| D-14-14-14-14-14-14-14-14-13-13-13-13-11-11-13-13-----------------(x10)-------------| A-----------------------------------------------------------------------------------| E-----------------------------------------------------------------------------------| CHORUS 2 e--x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x----------------------------------| B--12-12-12-12-12-12-12-12-12-12-12-12-12-10-10-10----------------------------------| G--x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x----------------------------------| D--x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x----------------------------------| A--x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x----------------------------------| E--x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x------------------(x4)------------| e-----------------------------------------------------------------------------------| B--17-17-17-17-17-17-17-17-16-16-16-16-14-14-16-16-----------------(x4)-------------| G-----------------------------------------------------------------------------------| D-----------------------------------------------------------------------------------| A-----------------------------------------------------------------------------------| E-----------------------------------------------------------------------------------| BRIDGE e-----------------------------------------------------------------------------------| B-----------------------------------------------------------------------------------| G-----------------------------------------------------------------------------------| D-13-13-13-13-13-13-13-13-14-14-14-14-14-14-14-14-16-16-16-16-16-16-16-16-16-16-----| A-----------------------------------------------------------------------------------| E-----------------------------------------------------------------------------------| e-----------------------------------------------------------------------------------| B-----------------------------------------------------------------------------------| G-----------------------------------------------------------------------------------| D-16-16-16-16-16-16-------------------------------------------------(x2)------------| A-----------------------------------------------------------------------------------| E-----------------------------------------------------------------------------------| e---12(h)--------------12(h)------------------------12(h)---------------------------| B--------12(h)-------------12(h)----------------12(h)-------------------------------| G-----------------------------------------------------------------------------------| D-----------------------------------------------------------------------------------| A-----------------------------------------------------------------------------------| E-----------------------------------------------------------------------------------| e-----------------------------------------------------------------------------------| B-----------------------------------------------------------------------------------| G-----------------------------------------------------------------------------------| D-(14-14-14-14-14-14-14-14-14-14-14-14-14-13-13-13)-----------------(x12)-----------| A-----------------------------------------------------------------------------------| E-----------------(palm muted)------------------------------------------------------| OUTRO/SOLO: e-----------------------------------------------------------------------------------| B--12-12-12-12-12-12-12-12-10-10-10-10-9-9-10-10-----------------(x4)---------------| G-----------------------------------------------------------------------------------| D-----------------------------------------------------------------------------------| A-----------------------------------------------------------------------------------| E-----------------------------------------------------------------------------------| e------------------------------------------------------------------------------------| B--17-17-17-17-17-17-17-17-16-16-16-16-14-14-16-16-------------(x4) (end back on 17--| G------------------------------------------------------------------------------------| D------------------------------------------------------------------------------------| A------------------------------------------------------------------------------------| E------------------------------------------------------------------------------------|
https://primanota.net/the-gaslight-anthem/the-baskseat-lead-guitar-chords.htm