What is the fine-grained topic of the following text: No baby boomer audiophile would mistake the A7 for the polite British sound of years past, the A7s immediacy came to the fore with Paul Simon's recent In The Blue Light album, There's an unforced purity to the sound that puts the music first on these old Simon tunes, spiffed up with wonderful new arrangements. Only return the topic.
Reviewing the audio quality of A7 with Paul Simon's In The Blue Light album.