On Thursday, April 13, the second day of Chol Hamoed, BEIS HAKNESES OF GERMAN MINHAG in Bene Brak will hold a gathering that features a shiur by Rav Binyamin Hamburger and Ashkenaz chazanut. I went to the one last Succos and it was really enjoyable.
For those who don't know Rav Hamburger is a leading expert on German Jewish/Ashkneaz minhag. The shiur will be in Hebrew but Rav Hamburger, who will be available afterward, is fluent in English.
Mincho at 6:45 Maariv at 7:45 Shiur by Harav Hamburger between. Following Maariv the Kenes Kehilos Ashkenaz. 8:00-10:00
27 Ben Yacov St. Bnei Brak (This is a few hundred meters from the Coca Cola factory)