This is my first acquaintance with Alfred Mueller's music and while it is in a way far from the type of progressive rock I tend to listen, it is an interesting and welcome turn of a page.
The first thoughts that come to mind are that the music Mueller composes comes from years of blending and filtering the influences of the whole spectrum of Electronic Prog in his mind. A one-man band with a very strong statement of adventurous keyboard playing, SONIQ THEATER will remind the fans of Jean-Michelle Jarre, Vangelis, Kraftwerk (yes that too) and Mike Oldfield. Now this is not strictly speaking a "Berlin-school" electronic prog album as the heritage of symphonic prog is evident throughout and touches of Yes, ELP and even Marillion can be heard in the more symphonic/classical music-minded numbers, blended with a more light-hearted atmosphere that runs through the entirety of "Stardust Memories".
Instrumental symphonic/electronic music then, without the massive odd-time signatures, the guitar blasts, but with a very strong keyboard performance by Mueller. The synth sounds are predominantly spacey and the same applies to the bass lines supporting (another strong point of the album) and this is also reflected on the track titles: Alien Ambassador, Lunar Sea, Venus Transit, to name but a few.
Spacey and calm atmospheres dominate but the album also consists of some "playful" compositions, with careful beats that somehow lift the spirits (see e.g. Venus Transit, Alien Civilisation) and tend to be the most interesting ones for me along with the more pompous symphonic ones (Elysian Fields, Some Things Never Change). There is a single track with vocals (Break the Frame) where the listener will find some good classical/symphonic guitar work but fails to impress; on the contrary, it feels like a few of the instrumental tracks would sound even better with vocals. The production is satisfactory with only a few tracks suffering from poor sound in the drumbeats.
All and all, an interesting album from SONIQ THEATER with some highlights that can serve the purpose of your summer soundtrack under the stars, more so if you are into the retro/nostalgic electronic feeling of the 70s.