The final performance show of the season of NBC's The Voice averaged 12.55 million viewers Tuesday night. The two-hour telecast was also the No. 1 show among adults 18-49. Earlier in the evening, a one-hour version of NBC's America's Got Talent wound up with 12.04 million viewers and also ranked No. 1 among the key demo. Beginning next week, AGT will occupy all three hours of NBC's primetime schedule on Tuesdays, beginning with a one-hour repeat at 8 00 and all-new two-hour shows beginning at 9 00 p.m. Although CBS aired only repeats Tuesday night, it still managed to place second, but with just 6.99 million viewers. ABC averaged 5.14 million viewers, while Fox trailed with 3.19 million.