Gee, I wonder why?

Via THR:

Sunday’s Bruno Mars-loving Grammy Awards took a dramatic ratings spill, fetching the smallest audience in the show’s history.

The telecast, which ran a bloated three-and-a-half hours, was off by 24 percent from 2017 with adjusted numbers. With time zone adjustments taken into account, the telecast averaged 19.8 million viewers and a 6.9 rating among adults 18-49. Among total viewers, that number was down even more than overnight returns from Nielsen Media that it a 12.7 rating among households. It’s the biggest drop for the Grammys since the 2013, the year after the show swelled following the death of Whitney Houston.

The 2017 overnight ratings for the Grammy Awards didn’t paint the most accurate portrait of their year-over-year performance. The 16.0 rating among households, steady with 2016, ended up translating to a not-insignificant gain of 1 million viewers. Those Grammys were the best in two years, averaging just north of 26 million viewers and earning a 7.8 rating among adults 18-49.

CBS shifted the Grammys back to Sundays in 2017, a move that ultimately proved fruitful for the show. But, unlike the last few years, the 2018 Grammys happened rather early on the calendar — by a full two weeks. The Grammys last aired in January back in 2014.