The other day I came across a Web site called the Truck Driver's Gear Change Hall of Shame, devoted to pop songs that modulate, or offer a key change, in order to amp up the drama, or simply to keep the listener's interest, as the song turns the 3:30 corner. The site lists some good examples of this thing - "The Candy Man," "I Just Called to Say I Love You," Macy Gray's unstoppable "I Try," "I Got You Babe." In that last one, you know, Cher had asked Sonny specifically to write a song with a big honking key change for her.
Of course, half of all Barry Manilow's songs are listed as well. They somehow missed out on "Ready to Take a Chance Again," after which Barry's truck needed an entirely new transmission.