I tried to get into the Capricho park during my 2009 visit, but at that time, it was only opened on weekends. Is that still the case? I wish I could go to that concert.
Winter (October to March): Saturday, Sunday and holidays from 09:00 to 18:30. Summer (April to September): Saturdays, Sundays and holidays from 09:00 to 21:00. Closed: January 1st and December 25th