It's been more than a decade since Daughtry appeared on American Idol, but the band has recently announced a list of upcoming concerts. American Idol has seen a lot of talented contestants perform on their stage and nothing but fame, successful music careers, and thousands of fans have followed their unforgettable appearances on the show.

From tenor, baritone, and bass to country, pop, rock, and soul, these male contestants made history through their unique and moving performances and became the audience's favorites. Today, they are considered the best male voices by many Redditors.

David Cook

David Cook performs on American Idol

Most Redditors believe that is worthy of being maned one of the best contestants, and thebigman3 noticed it. In one of the many American Idol discussions, they commented "I love how everyone loves David, that was such a good season and he was awesome."

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His vocal talent did not go unnoticed by viewers and he won season 7 of American Idol. His victory followed many successful hits and music videos, and his 2008 album titled "David Cook" had multiple songs that reached millions of reproductions (via The Things). Although he disappeared from the music industry for almost seven years, he recently released a new single called "TABOS."

Phillip Phillips

Phillip Phillips performing in American Idol

Steven Tyler and Jennifer Lopez had nothing but smiles on their faces when they heard 28-year-old Phillip Phillips sing in his audition on the 11th season of American Idol. From that very first moment, he stole the hearts of many viewers with his version of Stevie Wonder's "Superstition."

The charming country singer ended up breaking the show's previous voting records and won the finale (via MTV News). TictactTyler pointed out how "Phillip Phillips was certainly an artist" and how he "was the obvious winner." For most Redditors, the singer is always on the list of all times favorites, and his undeniable vocal talent has ranked him as one of the best American Idol winners of all time.

Adam Lambert

Adam Lambert laughs on American Idol

Although he is considered to have one of the most controversial eliminations in American Idol's history, Adam Lambert has still had a successful career. His amazing range, powerful vocals, and controlled technique got him a call from the remaining Queen band members, Brian May and Roger Taylor, to substitute the place of Freddy Mercury. Of course, Lambert will never replace the iconic singer, but Mercury's songs require the best voices to fulfill its demanding vocal requirements, and Lambert has them.

Greenmonsterff assures the best performances were Adam Lambert "singing anything." He also pointed out how "He had more vocal talent than anyone that’s ever been on the show," and most fans of the competition agree. With countless reproductions and hits, Adam, without a doubt, has made his way through the best contestants.

Lee DeWyze

Lee DeWyze performing Beautiful Day and playing the guitar in American Idol

Lee DeWyze won season 9 of American Idol and has since gone on to have a successful career (with his song, "Blackbird Song," featuring on The Walking Dead in 2014). His voice resembles John Mayer's, but his personal rock-influenced touch makes him one of a kind. On his unforgettable rendition of "Hallelujah," he got a standing ovation and an almost one-minute-long round of applause, and most viewers agreed that it was the best cover of that song to ever be interpreted in the show's history.

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His vocal growth throughout the season took many fans by surprise, such as artourtex, who said: "I wasn't impressed until I saw him live, he can sing!". User ggbtt added "Lee is amazing live. Also a killer songwriter. His season could’ve benefited from the original songs allowed on the show."

Alejandro Aranda

Alejandro Aranda with a guitar during his American Idol Audition

Even though his appearance on the show is pretty recent, Alejandro Aranda blew everyone away with his self-taught musical abilities. His clean and soft vocals could fool anyone into believing that he had years of singing classes. Not only was his melodic voice impressive, but his amazing guitar and song-writing skills made a memorable impression too, which inevitably led him to be one of the show's favorites of all time.

He was one of the most complete artists American Idol has seen. veRGe1421 shared "Alejandro is the only one I care to listen to really after the show" and many online comments follow the same admiration for the contestant. Although he lost the 17th season of the competition, he had one of the best auditions in all the revival seasons.

Chris Daughtry

Chris Daughtry performing on American Idol

Chris Daughtry has to be one of the most successful singers to ever participate in American Idol. Following his shocking elimination in season 5 of the series, the talented musician founded his internationally recognized band "Daughtry," which marked an era for teenagers in the early 2000s, and debuted in a Batman fan movie. 

User shatteredmatt recognized how after 16 years, to have "over 3 million monthly listeners on Spotify is pretty good for a rock band nowadays." They also spoke for many when they said "I am a big fan of his. Best singer I have heard live for sure." Daughtry stood the test of time and is still loved by millions, and not many contestants can say the same.

Kris Allen

An image of Kris Allen singing into a microphone in American Idol

A lot of viewers felt bitter about his win over Adam Lambert, but, as MarionCotesworthHaye stated, Kris Allen "was very talented. Adam was very talented. We got two nice things out of that season. One had to win, and maybe the wrong guy did [win], but Kris Allen is a very talented person."

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When it comes to artists and vocal talent, singers cannot be compared. Each one has their own unique style and characteristics that make people hear their songs and fall in love with their voices. Competitions are not always fair according to many, but Kris Allen definitely stole the hearts of multiple fans and achieved a brief successful musical career, and a lot of his songs reached millions of reproductions worldwide.

Taylor Hicks

Taylor Hicks laughing on American Idol

When he auditioned for American Idol, he was no stranger to performing on stage. Taylor Hicks had a solid career as a singer and musician before winning season 5 of the show. His soft vocals won the hearts of many viewers, including sethgoose, who recently stated "My favorite Idol contestant of all-time, Taylor Hicks. He is the reason I got hooked on Idol, and he greatly contributed to me falling in love with music."

In addition to that, as muddybrookrambler added, Taylor Hicks "managed to get a unique (for Idol) song on the show!" and named him one of the most memorable male contestants of all time, with his covers of classic hits such as "You're So Beautiful" by Joe Cocker, and his beautiful original song "Do I Make You Proud."

Jeremiah Lloyd Harmon

Jeremiah Lloyd Harmon wearing a suit in American Idol

Jeremiah Lloyd Harmon not only had amazing vocal talent, but he was the writer and composer of the song he auditioned with. The song had powerful chords, melodies, and incredibly moving lyrics that left judges Lionel Richie, Katy Perry, and Luke Bryan in shock. Richie even compared him to Elton John.

This Reddit user said about the eventually eliminated contestant "He was leagues above the rest vocally, made great choices, [...and was] one of the most undeserved eliminations in recent history." Jeremiah Lloyd was a unique contestant, talented in many ways. Undeniably, he was one of the most complete artists to ever be on the show.

Casey Abrams

An image of Casey Abrams singing into a microphone in American Idol

The best American Idol judges, Steven Tyler, Jennifer Lopez, and Randy Jackson were blown away by the incredibly soulful voice of Casey Abrams. The judges didn't even make any commentary on his audition, but instead held their hands and gave their enthusiastic yeses simultaneously. Abrams had such extraordinary vocals that in most of his performances he sang Acapella or was just accompanied by a double bass.

"My dream winner would’ve been Casey Abrams (he legit is the reason I watch the show)" user BearGoneBad commented. Many still name Casey Abrams among their favorite male voices of all time. His performances have been truly memorable and nobody else has been able to give as powerful renditions of jazz and soul standards.

NEXT: 10 Best American Idol Auditions From Its Original Run