Support organisation

I would like to become a member of the »Förderverein Musik an der Stadtkirche Bad Cannstatt« or »Bachchor und Bachorchester Stuttgart e.V.«

Memberships
Select your desired membership(s).
Personal data
Your bank details

SEPA Core Direct Debit Mandate

Recurring payment, creditor identification number: DE13ZZZ00000475423

I can demand reimbursement of the debited amount within eight weeks of the debit date. The conditions agreed with my bank apply.

What is the sum of 3 and 1?