Minhogim during Sefiras HaOmer and the three weeks

What are the German minhogim for the period of Sefiras HaOmer?

Jacob

Is it allowed to listen to recorded music during the three weeks? Is the prohibition only on live music/singing?

Brian

Does the Chasam Sofer say that one may shave every erev Shabbos? If so, was this accepted in Germany?

Daniel

Are there any differences in terms of minhogim, in regard to the Bein HaMetzourim period?

I understand that Rabbi Yitzchok Tirna (who wrote a Sefer Minhogim on Minhag Poland) codified the halochous for this period. His opinion is followed by the Ramoh. What was (is) the Minhag Ashkenaz (Germany)?

1) Shehecheyonu?
2) Eating meat of chicken during the nine days?
3) Making a siyum in order to eat meat?
4) Listening to music (live music, recorded, radio, etc.)
5) Bathing vs swimming
6) Shaving vs haircuts

Rallis

What was the minhog among Bnei Ashkenaz in regard to shaving ones beard during Bein HaMetzorim?

I understand that the Ramo holds that it's ossur from the 17th of Tammuz until 10 Av.

Did German Rabbonim disagree with the Ramo?

(It seems from the Maharil, that it is the week that Tisho B'Av falls when shaving is ossur.)

Rallis

Do you mean to say that the only greater stricture during the nine days is not eating meat?

Also, if there is no swimming during the whole three weeks, what about bathing? Is there a difference in regards to bathing during the three weeks vs. the nine days?