Cold
Warmer
Warmer yet
Hottest so far... and since I can't check it again until late tonight I'll take this as close enough! (Just step outside)
Thought I gave it away with this one..
The crowd watching the British Invasion in the UK
(and since some of you may not have caught the show and don't know what I'm talking about,
here's a picture from the other side. You can see the original clue I posted- speaker maybe?- through the gazebo to the right.
Although this night I think the ghosts of Beatles past showed up to join the fun

)