Roman started his active career in 1991. He gained his first professional experiences in combos of solo players of Gustav Brom Bigband . He was also member of All Stars Mojmíra Bártka,Trio Komorního Jazzu Jaromíra Hniličky, Quarter Güntera Kočího, Quintet Josefa Audese and others. Roman founded his own quartet consisting of Standa Mácha (piano), Petr Dvorský (contrabass) and Marek Patrman (drums) in 1992. He was intensively engaged with composing of modern jazz music. He became member of fusion formation TUTU Boris Urbánek in 1993 and was nominated for award Jazzový Kája as best new artist. He was nominated for this award twice more – as best new artist and as best group performance in 1994. Roman releases his first album with own composition Magic Holidays in 1995. At the same time he was working on album Sundance with the band TUTU, which he also helped compose. He also worked on album Stín mý krve with Roman Dragoun and Michal Pavlíček and obtained the award for best solo player at International Jazz Festival in Trenčín, Slovakia. He recorded album UV Drive in cooperation with Emil Viklický and Boris Urbánek in 1996 and is again nominated for the award Jazzový Kája in two cathegories. In 1997 he founded a trio – Petr Dvroský (contrabass) und Jiří Slavíček (drums). A year later he records a very ambitious project Jazz Perception. It was made of Roman Pokorný Trio with guests – Gabo Jonáš (organ), Juraj Bartoš (trumpet), Štěpán Markovič (saxophones), Sváťa Košvanec (trombone).
Roman Pokorný Trio recieved award for the Best Group of 1997 and Roman was nominated for Personality of the Year at the same time. In the same year he also recorded the album Tribute to Duke Ellington with Vincent Kumr and Láďa Kerndl. He was announced as the Best Jazz Guitarist in the survey of Czech jazz association and magazine Harmonie.
In 1999 he successfully toured USA and performed at jazz festivals in Beirut and Berlin. He also recorded CD Blue Point and was again awarded Jazzový Kája for the Best Jazz Album of the Year called Jazz Perception. The editors of magazine Stereo a Video awarded Roman´s album Acoustit Grooves as the Album of the year. The album was for Studio Fontána.
Roman was awarded the Golden Angel, an award of the Academy of Popular Music in 2000. In the same year, he is founding his own jazz group Analogic, inspired by hard rock, soul and funky of sixties and seventies. He creats very original fusion of these musical styles and jazz by his own expressional means. Jakub Zitko plays hammond organ, Miloš Dvořáček drums and Aleš Slavík plays contrabass. He takes part on jazz festival in Riga, Latvia.
He accompanied outstanding singer Tonya Graves. He founded Blues Box Heroes and worked on album I suddenly realised for Láďa Kerndl. For this album he composed ten pieces and arranged three standards in the best way to fit in the final form of the album. This album is the first vocal jazz album with own compositions in the Czech Republic. At this time he started to work with Yvone Sanchez on the project Brazilian Mood. In 2002 he recorded an album 03 with drummer Bady Zbořil and italian hammon organ player Albert Marsico, in which he participated as an author too. Two years later in 2004, the multimedia double album Two Faces was released. On one of these two CDs is live sound recording of Jazz Trio with Ondre J Pivec playing the hammond organ and Martin Novák playing the drums; on the second CD is studio recording of Blues Box Heroes with Blues veteran Tony Smrška.
Roman recorded a fusion album Hot Jazz News in 2007 with black American rhythmical section – Steve Clarke (Laco Deczi, Mike Stern) – bass guitar, Chris Stanley (George Benson, Anthony Jackson) – drums and Jakub Zomer – fender piano.
The album Feelin´ The Spirit pays tribute to legendary jazz guitarist Grant Green. Top musicians as NajPonk, Petr Dvorský or Martin Kopřiva took part in this project and this formation recorded the double album in studio Svárov in the autumn of 2012. It was released in spring 2013. You can come to see Roman regularly in clubs U Malého Glena, Jazz Republic and in Jazz Dock with his Blues Box Heroes or other groups.
In December 2014, Roman releases a long-awaited and after some time again vocal album Eldorado. The album is consisting entirely from Roman’s own compositions and is quite varied genre but has the author's distinct taste and focus on Rhythm & Blues. This time Roman composed all the lyrics in English and one even in Spanish. A number of excellent musicians were involved on the album, including two guests from abroad. Leader in horn section was British saxafonist Osian Roberts and on harmonica excels Hungarian blues harp player Matyas Pribojszki. The album features: Honza Kořínek, Miloš Dvořáček, Martin Šulc, Taras Vološčuk, Marcel Flemr and Pavel Novák. Roman recorded the album Brooklyn Session in NYC in April 2016. It contains his own composition in jazz mainstream with blues roots and references to BeBop. Excellent musicians from the USA jazz top class participated on the recording. Pat Bianchi plays Hammond organ (2 times Grammy nominee, 2016 Best Organist of the Down Beat magazine), Frank Basile plays baritone saxophone and Byron Wookie Landham plays drums. The recording sessions took place at Acoustic Recording Studio in Brooklyn under the supervision of Mike Brorby. Roman is featured on the first page of the Harmonie magazine in December 2016.