2- and 4 share two notes and do the same Away job — but 2- walks to 5 like it was born for it (it was). Pop pre-choruses swap the 4 for 2- to soften the floor before the lift.
moves4 and 2- share two notes; the bass drops a third, the job stayssolo·singthe key's 4 keeps working over both chords — hold it across the swapon recordthe ii-for-IV swap — pop pre-choruses and gospel turnarounds everywheretry itIn your pre-chorus, replace the last 4 with 2- and feel the 5 arrive smoother.