My home town is Friedberg (Hessen), about 35 km North of Frankfurt am Main. The main street Kaiserstraße is also the very busy shopping centre of the region; in summer there are often Russian musicians busking during their vacancies.
The next town 35 km North is Gießen, an old University town and seat of the district administration. The main street Seltersweg is a real show place for buskers all the year over.
If I might be of some help, send me a PM. Visiting Friedberg you can get the extended guided tour through my home town for free (I'm an accredited guide).

Wilfried