'American Idol' Channels '90s Country

Lauren Alaina and Scotty McCreery, together on the "American Idol" finale.

Last night's "American Idol" final showdown between Scotty McCreery and Lauren Alaina, ahead of tonight's revelation of the series' 10th-season champion, featured covers of two '90s country smashes.

George Strait selected his own 1996 Country Songs No. 1 "Check Yes or No" for McCreery. The original version of the song became the 28th of Strait's format-record 44 chart leaders.

For Alaina, 2005 "Idol" winner Carrie Underwood dipped back to Pam Tillis' "Maybe It Was Memphis," which rose to No. 3 on Country Songs in 1992. The swaying track marked the third of Tillis' 13 Country Songs top 10s between 1991 and 1997. (She scored her sole No. 1 with "Mi Vida Loca (My Crazy Life)" in 1995).

Relive McCreery and Alaina's interpretations of the songs in Billboard.com's recap of last night's episode.

(How young are this year's top-two contestants? Neither McCreery (Oct. 9, 1993) nor Alaina (Nov. 8, 1994) were born when Tillis' "Memphis" was charting).