i love the happy working song (and 'how does she know') ...hand in my pocket has been a favorite of mine for years as well. :)

i took hoy tenemos...and might ask you for more of same style if it's a good walking song. i find the more upbeat or tempo driven songs are the best to walk to, to keep pace with. :) and i love to fill my mp3 player with them.

oh! and have fun in cartagena!