Queens Park Rangers have had the most players to have at one time played for Watford - 81. But they have been in the Premier League.
I'm going to go back to my original answer before I changed it to Charlton - Leyton Orient. Charlton was also wrong because they have played in the PL, but the question doesn't say that they are a current FL club.
It’s all yours, Fez! Brentford and Watford have shared 53 players. Same number as with Reading, but they were Prem... once...
Atlanta's annual Music Midtown Festival provided one of the best environments of all the nation's summertime festivals. "Not to mention a killer lineup that included Drake, Elton John, Van Halen, Run the Jewels and Sam Smith" ??
Nope. It's a pants question anyway, sorry. Clue: this major player in the grunge scene has anew album out this week.
I am not aware that he's played live with AIC, although SEJ "live" does form part of the answer by way of explanation... you are correct with AIC, one of my favourite all-time bands and definitely not everyone's cup of tea!