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The base score is a value used in calculating song ratings. Values are held within the games themselves.

The Base-ics[]

The base score for any given song is obtained by hitting every single note in the song at a x1 multiplier. (To obtain a sample base score figure, pick a song on Easy and deliberately overstrum after every ninth note, while holding sustained notes as little as possible.)

Base scores are obviously different for each difficulty level.

The Cutoff Equation[]

In the Guitar Hero series, the only way to know how many stars you got on a song or how many points you need to reach a certain amount of stars is the Cutoff Equation. Average multipliers are used in calculating the review rating you receive at the end of a song. Achieving an average multiplier of 2.0 (or, equivalently, a total score of double the base score) will earn you a 4-star review. 5 stars are obtained for an average multiplier of 2.8 in Guitar Hero II, Guitar Hero: Rocks the 80s and Guitar Hero III, or 3.0 in Guitar Hero. Determining the locations of the 4- and 5-star cutoffs make it possible to mathematically determine the base score for any given song at any given difficulty.

You need to know:

  • Base Scores
  • Star Multiplier Table
  • Your Difficulty of the song of choice

The Formula[]

To get the minimum cutoff score for a song, all you have to do is multiply the base score by the correct Star Multiplier (see the list below). In other words, follow this formula:

BS x M = Cutoff Score

Star Multiplier Table (post Guitar Hero I)[]

According to the table below, your average multiplier has to be at least the amount on the right to get a certain amount of stars.

  • 3 Stars: x1.0
  • 4 Stars: x2.0
  • 5 Stars: x2.8
  • 6 Stars: x3.6
  • 7 Stars: x4.4
  • 8 Stars: x5.2
  • 9 Stars: x6.0

Star Multiplier Table (Guitar Hero I)[]

  • 3 Stars: x1
  • 4 Stars: x2
  • 5 Stars: x3
  • 6 Stars: x4
  • 7 Stars: x5
  • 8 Stars: x6
  • 9 Stars: x7
v · t · eGameplay features of the Guitar Hero series
Difficulty levels
Beginner/Basic · Easy/Casual · Medium/Regular · Hard/Advanced · Expert · Expert+
In-game features
Achievements/Trophies/Awards · Calibration · Cheat Codes · Lefty Flip · Multiplier · Notes · Rock Meter · Scoring · Star Power (meter · phrases · paths explained) · Star Rating · Whammy
Instruments
GH Guitar iconGuitar · GH Bass iconBass · GH Lead alt iconLead · GH Rhythm alt iconRhythm · GH Drums iconDrums · GH Vocals iconVocals
Cheats
Hyperspeed · Large Gems · No Fail · Performance Mode · Precision Mode
Note types
Guitar/Bass Chords · Hammer-ons and Pull-offs · Long notes / Sustains (extended sustains · reverse extended sustains) · Open notes · Slider notes / Tap notes
Drums Accent notes · Bass drum notes · Drum swells · Ghost notes
Vocals Vocal notes · Spoken notes · Freeforms
Game Modes
General Career (Quest) · GHTV (songs) · Mii Freestyle · Quickplay(+) (Gig Challenges · Star Challenges) · Party Play · Practice · Rock Star Creator / Rocker Creator · Tutorial
Multiplayer Band · Battle · Cooperative · Face-Off · Pro Face-Off · Roadie Play (Roadie Battle · Roadie Quickplay+ · Roadie Setlist Manager) · RockFest (Do-or-Die · Elimination · Momentum · Momentum+ · Perfectionist · Streakers)
Music Studio / GHStudio GHTunes / GHTracks · Recording Studio / GHJam · GHMix / GHMix 2.0
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