O come let us sing!

I am going to prepare a series of reflections on some Psalms.  Particularly for the season of Lent and Easter. 
These might be released electronically and/or in pamphlet/booklet form in the next few weeks.
These could be particularly useful for reflection and devotion during Lent and Easter
My question?
What Psalms would you find it helpful to be discussed
I begin from a very simple place...thinking that Psalm 23, Psalm 22, Psalm 150...would be featured. What other Psalms would be helpful...either comment on this post or email me at coro35@tpg.com.au