Neil Patrick Harris and Jason Segel Sing Les Mis Duet

Neil Patrick Harris and Jason Segel performing on Inside The Actors Studio

updated 03/30/2014 AT 2:00 PM ET

originally published 03/30/2014 AT 3:20 PM ET

We already have our tissues ready for the series finale of How I Met Your Mother on Monday, but this makes it a little easier to bear.

The cast of the show got together for an episode of Inside the Actors Studio on Thursday, and when they did, it was legendary.

There were lots of laughs, but the best moment came when Neil Patrick Harris and Jason Segel performed an impromptu duet of “Confrontation” from the musical Les Miserables.

It wasn’t the first time the pair have sung the song together – the Les Mis fans previously performed a snippet on The Megan Mullally Show in 2006.

We don’t know what we enjoy more, the pair’s eagerness when they’re asked to perform it or their costars’ amusement at hearing it one more time.

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