Just about every track on Pet Sounds has a key change, and not one of them is obvious or cliched.
Wouldn't It Be Nice starts with a key change, has a key change going into the middle section, and
a marvellous return change coming out again.
God Only Knows seems to teeter between two keys, you never quite know which key it is in, and
the middle section again has a brilliant subtle change and when the vocal comes back in...