[1][2] Hans was eventually replaced by Dean James with keyboardist Mario Callender and DJ Robbie Persaud appearing as supporting members.

[3][1] In 2011, Kees was crowned T&T's International Groovy Soca Monarch[4] The band's hit tune "Wotless" was also nominated for a 2011 BET Soul Train Music Award in the category of best Caribbean Performance.

The band has also collaborated with artistes such as Joss Stone, Shaggy, Busy Signal, Shenseea, Snoop Dogg, Major Lazer and Tesanne Chin.

Born to Deanna, a classical trained opera singer and accountant George “Bunny” Dieffenthaller, oldest son Hans began playing the drums at the age of 10.

At the age of 13, Kees formed an R&B group called KLAS, comprising former T&T Miss Universe Faye Alibocus, schoolmates Michael Zephyrine and Marc Alexander.

Kes released other tracks such as "Our Prayer", and reggae-influenced songs "Limin" and "Bigger Brighter Day" from this album which received heavy rotation on local radio stations.

Bandleader Kees Dieffenthaller composed with noted songwriter Desmond Child, a song on American Idol alum Ace Young's 2008 studio album.

[16] Kes released their sixth album entitled Wired in February 2012, which included popular tracks such as "Precision Wine" "Stress Away" and "Coming Over".

Also dubbed "Tuesday On The Rocks", this show featured renowned international, regional and local artists along with young, up-and-coming acts.

[20] The band collaborated with noted photographer and film director, Johnathan Mannion for the music video, which also features cameo appearances by Anya Ayoung Chee, winner of Project Runway, season nine and Major Lazer member, Jillionaire.

"Workout", a mixture of Soca music and Afrobeat quickly became one of the more popular songs coming out of Trinidad and Tobago Carnival 2017, generating over 3,000,000 views on YouTube.

During his performance at "Tribe Ice" (Fete), Kees invited Jamaican Olympic Games gold medalist Usain Bolt on stage side during his segment with Kernal Roberts.

During the carnival festival, Kes also makes multiple appearances and performances on various music trucks as masqueraders and spectators parade thought the streets.

The band has opened for acts such as Sugar Ray (2005), Musiq Soulchild (2008), Sean Paul, Rihanna, (2006), John Legend[24] (2006), Maroon 5[25] (2010), Evanescence[26] (2011) and Ne-Yo[27] (2013).