Twenty 1
by Chicago
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Chicago bestography
Twenty 1 is ranked 21st best out of 39 albums by Chicago on BestEverAlbums.com.
The best album by Chicago is Chicago Transit Authority which is ranked number 1027 in the list of all-time albums with a total rank score of 1,696.
(N.B. Bestographies include all albums by an artist (and their variations), but do not include albums ranked outside the top 100,000).
Listen to Twenty 1 on YouTube
Twenty 1 track list
The tracks on this album have an average rating of 77 out of 100 (1 out of 12 tracks have been rated).
Twenty 1 rankings
Calculated from aggregate positions across 60,000 charts (2 million album rankings). Click to see how the rankings are calculated (Last updated: 4 hours ago)
| Year | Source | Chart | Rank | Rank Score |
|---|---|---|---|---|
| 2025 |  TheDude85 | Top 100 Music Albums of 1991 | 49/100 | 3 |
| 2022 | henrygreen0203 | Top 35 Music Albums of 1991 | 10/35 | 4 |
| 2021 | henrygreen0203 | Favorites 1990-1995 | 13/72 | - |
| 2019 | henrygreen0203 | The 90s Was a Transitional Decade | 7/100 | - |
| Total Charts: The total number of charts that this album has appeared in. | 4 | |||
| Total Rank Score: The total rank score. | 6 | |||
Twenty 1 collection
Showing all 5 members who have this album in their collection
Twenty 1 ratings
Average Rating = (n ÷ (n + m)) × av + (m ÷ (n + m)) × AVwhere:
av = trimmed mean average rating an item has currently received.
n = number of ratings an item has currently received.
m = minimum number of ratings required for an item to appear in a 'top-rated' chart (currently 10).
AV = the site mean average rating.
Showing latest 5 ratings for this album. | Show all 11 ratings for this album.
| Rating | Date updated | Member | Album ratings | Avg. album rating |
|---|---|---|---|---|
| ! | 12/05/2025 10:57 | Leginlists | 3,774 | 83/100 |
| ! | 10/28/2025 09:51 |  Tamthebam | 23,171 | 69/100 |
| ! | 11/28/2023 00:34 | LosWochos | 47,364 | 75/100 |
| ! | 06/20/2022 13:25 |  MetalMan67 | 6,198 | 71/100 |
| ! | 10/19/2021 04:53 |  zags7000 | 20,568 | 64/100 |
Rating metrics:
Outliers can be removed when calculating a mean average to dampen the effects of ratings outside the normal distribution. This figure is provided as the trimmed mean. A high standard deviation can be legitimate, but can sometimes indicate 'gaming' is occurring. Consider a simplified example* of an item receiving ratings of 100, 50, & 0. The mean average rating would be 50. However, ratings of 55, 50 & 45 could also result in the same average. The second average might be more trusted because there is more consensus around a particular rating (a lower deviation).
(*In practice, some albums can have several thousand ratings)
This album has a Bayesian average rating of 65.8/100, a mean average of 60.0/100, and a trimmed mean (excluding outliers) of 60.0/100. The standard deviation for this album is 16.9.
Twenty 1 comments
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TheDude85 11/16/2019 13:32 | #244915
A descent into mediocrity
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