When a station analyzes its music system, it should examine how songs rotate. A large library can sound like a handful of songs if they play at the same time of day. On the other hand, a relatively small library can sound huge if the songs rotate properly. But the system won’t work unless the math is right. Fortunately, there’s a solution. Start by setting up perfect music rotations.
Poor math is the most common source of problems. Many things cause songs to rotate poorly, but this is usually the cause. Every system is compromised over time as programmers move songs from one category to another or clocks change without adjusting the song count.