Scotty McCreery took on the Coasters' 1957 rock 'n' roll song 'Young Blood' for his second performance tonight on 'American Idol.' The contestants had to choose songs from the catalog of legendary songwriters Jerry Leiber and Mike Stoller, and during rehearsals, McCreery received some interesting performance advice from this week's mentor, Lady Gaga.

The 'Judas' singer noticed that McCreery wasn't focusing enough on singing directly into the mic, and she had some interesting words for the straight-laced country boy. "Anytime that you're singing you need to get in the center of that hot dog," Gaga says, referring to the microphone. "You pretend that's your girlfriend ... Make love to that microphone."

After kissing his cross and saying that it better be a "good looking microphone," McCreery took the stage in an electrifying concert-like performance. He worked the stage, bringing comedy (snapping his head around to the different cameras during quick lines), and that superstar flair that the judges are always talking about. The song's lyrics focus on the obsessive thoughts that come along with new romance, and McCreery sang the song perfectly with a semi-crazed (and we mean that in a good way) look on his face.

McCreery fans will be happy to know that the judges loved his 'Young Blood' performance. "I think we just saw both sides of Scotty concert ... You're like a seasoned professional on this show," Randy Jackson says. J. Lo says, "I think it was really great," while Steven Tyler delivered another Tylerism, saying, "Dude you made Gaga's yaya go lala." We think that may a good thing.

Watch Scotty McCreery Perform 'Young Blood' on 'American Idol'