1.   More recently, however, ABC has seen its prime-time fortunes erode badly, suffering through three straight fall seasons without developing a new, breakthrough hit.

2.   NBC, which had the only breakthrough hits of the season, is the only network holding its own this summer.

3.   Vivid characters abound on his first album since that breakthrough hit.

4.   Could they succeed without the writer of their breakthrough hit?

5.   Distributors always are on the lookout for a breakthrough independent hit.