De Allen started as a cover band in 1982. The original line-up of De Allen consisted of Billy D, Duane Vallejos, Jimmy (Bear) Larrea and Julian Forniss. At this point in time Billy D. was on rhythm guitars and keys and Julian was on bass. The early version of the band went through a revolving door of singers, sometimes just singing themselves. Even in the early stages the band recognized the need to put on a great show using intro tapes and lighting and put all their money into PA gear, lighting, etc.

By 1983 De Allen had built up a strong following as a cover band. In 1984 Billy D. had left the band to be replaced by another guitarist. The band split up 4 months later. During this period Duane and Billy had been separately writing original material. Billy had worked that year with a band called Roxong and had switched to bass. Deciding to leave Roxong, Billy, Duane and Joe Lopez had a meeting and decided to rebuild a new version of De Allen as an original band. Guitarist Gabe Sinoui (whom Billy and Duane coincidentally met separately but liked) was also added as was singer Meliesa McDonell formerly of Roxong.

In the summer of 1986, Gabe and Duane left the project and were replaced by Nick Ruiz  on guitar and Sean Dunbar on keyboards continuing to write and perform throughout 1986. In December of 1986 De Allen took a break due to the holidays. Unfortunately this break was to be permanent for this line-up. Joe Lopez was killed tragically in a single car accident January 17, 1987.

Early 1987 saw the return of Duane and original De Allen drummer Jimmy (Bear) Larrea. This forged the basis of the line-up that was to make it's mark. Signing with management the band sequestered itself for six months retooling it's image and musical direction with a plethora of new songs. With an early Thursday night show in 1988 show at Gazzari's the band had introduced its rebooted incarnation on the Sunset Strip. By spring 1988 De Allen was playing every club on the Sunset Strip opening for bands such as Warrant, Guardian and Kik Tracee among others. Mid 1988 saw the release of the bands first formal recorded effort "Lovers Lane" which was financed by the band and it's loyal following. "Lover's Lane" is a 6 song EP on vinyl that included the following tracks: My Time, Endless, Hold On To The Fire, Lay It On The Line, Television Dreams and their blistering remake of Heartbreak Hotel. It has been re-released by De Allen, remixed-remastered with 4 bonus tracks on CD and available in the De Allen store.

 Mid 1988 saw the inevitable change in singers after 3 years. With De Allen's own desire to expand on it's roots with the recent addition of keyboardist Jim Gorski and Meliesa McDonell's own desire to expand on her own creative control on her own we were steered by Michael Fell to a singer who was able to live up to Meliesa's charisma, power and singular freshness that the band was in need of, Susan Szatmari. Three weeks after joining up with us we fulfilled a commitment at the Whiskey A Go-Go on the Sunset Strip not missing a single show, a testament in itself to her dedication and work ethic. We continued with our usual headlining shows throughout the strip and those that saw these performances were blown away with the ease at which Susan stepped into the fold with grace, class and pure positive energy. If one of you reading this happened to see one of these performances you know that this is not an exaggeration, but an understatement!!! 

1993 saw the resurrection of De Allen Mk.2 in the form of Billy D, Tom Krisor on guitars, Greg Mayfield on drums and Denise Wright on vocals. A harder edged, non-keyboard De Allen as the times seemed to demand was born and picked up playing smaller venues, writing and recording.

By 1994 Billy D. had decided to follow other avenues feeling the limitations Greg Mayfield left too large a hole in the rhythm section and left little potential for the band to grow beyond the point it was at. Though several other drummers were auditioned to replace Mayfield, it was a lost cause and Billy left to work with a series of established local bands before leaving the live scene completely to work alone on his original songs in his private recording studio in 1997 due to health and personal reasons.

In 1999, Billy D'Allyn started laying the groundwork and plans for a new De Allen release. In 2000, plans were cemented between Billy D. and former Armada drummer/songwriter John Heald to record a new De Allen CD. So on July 13th 2000 recording began between Billy and John along with Guitarist Nick Ruiz and singer Denise Wright. Due to administrative decisions issued by the independent label Denise Wright's tracks were to be re-recorded by Meliesa McDonell, completing what was to be the final mix of "De Allen - Twisted Inside" which was released on November 15th, 2000 on Metal Mayhem Records. All the instrument tracks were recorded in Stage One Recording Studios engineered by Billy and the new vocal tracks were recorded at Eclectica Studios, engineered by Tim Dolbear. The final product was produced by Tim Dolbear and Billy D'Allyn. This labor of love 12 song release was recorded, mixed and mastered between July 14th 2000 and October 18th 2000. The 12 songs are a journey from commercial hard rockers to power ballads as well as more obscure experimentation carried over from the 1993 writing incarnation. Billy and John's collective influences can be heard throughout the recording including Dokken, Black Sabbath, Yes, Heart, Femme Fatale, Journey and Saga. Much of the initial recording had Billy wearing many hats doing duty on engineering, bass, rhythm guitars and minor keyboards. 

In 2003, new material was written which culminated in the next phase of De Allen and the next De Allen CD "Ariel". In the wake of female singers such as Liz Phair and Avril Lavigne, we decided to invite Meliesa McDonell back to De Allen in yet pushing the creative envelope further. To better facilitate this, we also hired producer/guitarist Tim Dolbear to track the lead guitars while the drums, guitars, bass and keyboards were tracked in Stage One Studios new location in Oregon. Keyboard player Brian Ruedy (Bret Michaels Band, Whitesnake) also came on board and added an amazing dimension as well as Duane Vallejos also contributing some lead guitar. Tracking was concluded Summer 2004. On a sad note, drummer, background vocalist and co-writer John Heald passed away in September 2004. It was decided to shelve the project out of respect indefinitely suspending release. With the final mixing and mastering having gone through several changes we are shooting for a 2011 release to add further to the De Allen saga.