I keep on thinking how lucky the Beatles were to end up working with Martin. If they had worked with one of the lesser, far more controlling British producers like Andrew Oldham or, heaven forbid, Shel Talmy, they probably wouldn't have advanced far beyond the sound and arrangements of the first Beatles album. Martin saw their potential as songwriters and hitmakers and, as time passed and they became a proven quantity, encouraged experimentation. And he got a great sound for their songs, unlike the other producters, whose recordings were crude and primitive by comparison. The increasing quality and diversity of Martin's productions raised the bar that Oldham in particular realized he needed to emulate with the Stones (but never did).