Stuck in the middle of two other caches, it took a lot of planning to get it here.
S41 17.ABC, E174 45.DEF
A - My first isn't in anything, really, at all.
B - The second, the century, where this song was first called.
C - Jump one line above and repeat it again.
D - Take a call from our region, that number's your friend.
E - Not quite a rhyme but it is a small prime
F - This one is a seven, I'll give it this time.
Bring your own pen.
Stealth will be needed, this is a very busy location at almost all times of the day, please replace exactly how you found it. Technically a park and grab, but the parking can be iffy depending on time of day. A short walk from the posted coordinates.