Austrian Symphony Orchestra

There is no orchestra of this name. There are Several Viennese orchestras - their correct names are in German.

There are several likely fits - the first one here is usually the best match, but there are others to bear in mind -

Tonkünstler Orchestra (aka Tonkünstler-Orchester Niederösterreich)
Vienna Symphony Orchestra = Wiener Symphoniker
Vienna State Opera Orchestra = Orchester der Wiener Staatsoper
Vienna Philharmonic Orchestra = Wiener Philharmoniker
Vienna Festival Orchestra
Vienna Radio Symphony Orchestra = ORF Radio-Symphonieorchester Wien

And others. Usually, the name given in English will give a simple indication - e.g. "Wiener Mozart Orchester". ("Radio" = "Rundfunk").