Round 1

The host would provide the year the song was released, the performer, and the name of the song. A portion of the song is performed, and then the contestant has to attempt to sing the next line of the song. If correct, they advance to the next round, and a new song is introduced, which the next contestant in line must attempt; if not, they have to step back, and the next person in line tries the same song. A song is thrown out if none of the remaining contestants get the lyrics correct. The first four people (three people in season two) who get a song lyric correct move on to the second round, and any contestant who hasn't had a chance loses and returns on a future episode.

Round 2

The contestants who advanced go up in pairs to play a mini-game. The winner of the game advances to the championship round. In the CMT version, all four contestants play 3 mini-games for points, the two players with the most points moves on to the Chorus Showdown.

• "Scrambled Lyrics" (Renamed Random Shuffle): To play "Scrambled Lyrics", while the band is performing, words from the next line are shown scrambled on screen. The contestant is required to sing the line in its correct order. When one contestant is correct and the other is wrong at any point, the one who was correct moves on to the Championship Round. On the CMT Version, each correct answer is worth five points.
• "Karaoke Challenge": To play "Karaoke Challenge", while the band is performing, the contestant sees the words to the song in karaoke fashion. As the contestant sings the song, he or she will also see blanks, each representing a word in the song. The player who fills in the most blanks correctly (out of a possible 15) wins and goes on to the Championship Round. This round is similar to FOX's Don't Forget the Lyrics! because the contestant is the lead singer in this round. In the CMT version, each blank is worth two points (30 maximum).
• "Blind Start": To play "Blind Start", the band plays the beginning notes of a song. When the band stops, the contestant must sing the opening line correctly. One of the three contestants is eliminated from the second round.
• "Playlist": To play "Playlist", the three contestants are given 6 categories of song which have comical titles. Whichever two contestants have the most points after the 6 songs move on to the next round.
• "Singing with the Enemy": To play "Singing With The Enemy", the band plays part of a popular song. The first contestant must do the next line when the band stops playing. The band then picks up with the line the contestant said and stops. The next contestant continues on with the song. This goes through 3 passes. The two with the highest score move on. On the CMT version, up to 15 points are possible.

Chorus Showdown

This follows a similar format to the first round, but instead of singing a line, the contestant is required to sing the entire chorus without mistakes from the song performed. If both are correct or incorrect (sometimes after two rounds), then they go to a tiebreaker, where they are given the year and the name of the performer and the first person to buzz in will be given the option of singing or passing. If the singer is correct, they win. If the singer is wrong, the other contestant wins.

The winner moves on to the Final Countdown.

In the CMT version, Peterman gives the year, artist, but not the name of the song just yet. Then, the contestant in the lead gets the choice to play that song or pass it, then they give the name of the song.

The Final Countdown

In the NBC version, Ray Chew introduces this concluding round by announcing in song: "It's the Final Countdown!" Up to 7 songs are performed in a similar manner to the first round, but the contestant knows nothing about the song, (artist, title, year) and thus must use the lyrics in order to win the big money. For each song lyric that is sung correctly, the player wins $5,000. If the player gets five right, then they win $50,000. However, if they sing a lyric incorrectly, a strike is given. If three strikes are given at any point, the game is over, but the contestant still wins whatever money was accumulated up to that point. Beginning in the second season, the winning contestant also defends as champion title to face three more challengers. On the new CMT version of the show, correctly guessing a song earns $500, and getting five wins $10,000.

Changes for One-Hour Shows

The above format is the standard for a 30-minute episode of the show.

In a one-hour show, several changes are made:

• There are two qualifying games.
  • In each game, six players (only 5 for season 2) are picked from the audience to play Round 1, however, the first three to complete a lyric (only 5 for season 2) advance.
  • The three players then compete in a Round 2 game. Play continues, including a tie-breaker if needed, until one player remains. In season 2, three rounds are played until three contestants are eliminated.
• The two survivors of the qualifying games play the Chorus Showdown, the last player standing plays The Final Countdown.
• Beginning on August 21, in between some breaks, host Fatone goes into the audience to give an audience member a chance at $500. A question about a song is asked, and if the player gets it right, he/she wins the money. On December 28, two audience members were challenged to the same lyrics. The contestant who will wait is given headphones so that they cannot hear the other contestant until the song is completed. If both contestants are correct, both win $500. If only one is correct, that contestant wins $1,000.