Making it to a concert in time

Hello.
I'm going to see Beetlejuice at a Monday evening performance, and I just found out that there's a great concert at The Green Room 42 in the same evening. Beetlejuice should end by 21:30, when the concert is scheduled to start. 
Do you think it's possible to make it to the venue without being too late for the concert, or should I try and change the date of Beetlejuice?

When I was younger I would worry about things like this but old age has brought to the understanding that you can't do everything you'd like to. If you miss the concert you'll still wake up in the morning able breathe and enjoy the sunshine.

I hope everything works out for you but if it doesn't, remember there are other great things waiting for you down the road.

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