This guide includes the strum patterns I use to play You'll Be Back from Hamilton. See here for chords/lyrics. See Youtube for my ukulele play-along video. There are 3 strum patterns used in the song.

1. Single strums

Strum once per chord. If you're just learning the song, you can try playing single strums throughout the whole song.

2. Island strum variant

A typical island strum is D DU UDU. The variant I play is an island strum without the down strum on beat 2.

  1+2+3+4+
  D  U UDU
  

3. Pump strum

This is down strums on every beat. I also add in left handed muting (using my pinky to mute the sound) for a more boppy, staccato effect.

  1+2+3+4+
  D D D D
  

Playing Notes

There's a handful of split measures where you'll switch chords within the measure (vs. after 4 beats).

In the chorus + verses, [Cm7 F] is a split measure, and I give each chord 2 beats.

  1 + 2 + 3 + 4 +
  Cm7     F
  

In the bridge (da dat da part), [Cm7b5 F] is a split measure, and I split the measure

  1 + 2 + 3 + 4 +
  Cm7b5       F