Day 39 Knees up

British readers will know all about a "knees up" but it probably needs explaining to my Dutch followers....

knees-up

1. (Performing Arts / Dancing) a boisterous dance involving the raising of alternate knees

2. a lively noisy party or celebration, esp one with dancing

[from the song "Knees up Mother Brown'' to which the dance is performed]

To be able to sing along you can find the Lyrics here

The people pictured on the album cover are "Pearly Kings and Queens".