Please answer the following question: Information: - Hans Jurgen Kursch, better known as Hansi Kursch (born 10 August 1966 in Lank-Latum/Meerbusch, Germany) is a German singer, bass guitarist, and songwriter, best known for being the co-founder, lead vocalist, co-composer, and lyricist of power metal band Blind Guardian. He was also the bassist in Blind Guardian until the 1998 album "Nightfall in Middle-Earth". He also provides lead vocals for the band Demons and Wizards. - A drummer is a musician who plays drums, which includes a drum kit ("drum set" or "trap set", including cymbals) and accessory-based hardware which includes an assortment of pedals and standing support mechanisms, marching percussion or any musical instrument that is struck within the context of a wide assortment of musical genres. The term percussionist applies to a musician who performs struck musical instruments of numerous diverse shapes, sizes and applications. Most contemporary western ensembles bands for rock, pop, jazz, R&B etc. include a drummer for purposes including timekeeping and embellishing the musical timbre. Most drummers of this particular designation work within the context of a larger contingent (a.k.a. rhythm section) that may also include, keyboard (a percussion instrument) or guitar, auxiliary percussion (often of non western origin) and bass (bass viol or electric). Said ensembles may also include melodic based mallet percussion including: vibraphone, marimba or xylophone. The rhythm section, being the core metronomic foundation with which other melodic instruments, including voices, may present the harmonic/melodic portion of the material. - Luca Turilli (born 5 March 1972) is an Italian musician (primarily a guitarist) and songwriter. He is one of the founders of the symphonic power metal band Rhapsody of Fire. He also worked on a trilogy of solo albums as Luca Turilli, and released one album under the name of Luca Turilli's Dreamquest, a project he worked on alongside Dominique Leurquin. In 2008, Luca began an online guitar course titled "Luca Turilli's Neoclassical Revelation". The course takes its name from his neoclassical playing style. - Germany, officially the Federal Republic of Germany, is a federal parliamentary republic in central-western Europe. It includes 16 constituent states, covers an area of , and has a largely temperate seasonal climate. With about 82 million inhabitants, Germany is the most populous member state of the European Union. After the United States, it is the second most popular immigration destination in the world. Germany's capital and largest metropolis is Berlin. Other major cities include Hamburg, Munich, Cologne, Frankfurt, Stuttgart and Dusseldorf. - Marcus Siepen (born September 8, 1968 in Krefeld, Germany) is a German guitarist and backing vocalist, most known for being the rhythm guitarist of power metal band Blind Guardian. For the biggest percentage of Blind Guardian's songs, particularly in more recent years, he has almost strictly played rhythm guitar, with most lead and solo work being performed by Andre Olbrich. - Oliver Holzwarth is a German bass guitarist . He was born on 19 October 1967 in Landshut , Germany . He played bass as official member in Rhapsody of Fire along with his brother , drummer Alex Holzwarth . Oliver had been the live / studio bass player for Blind Guardian between 1998 and 2012 . Moreover , he is a member of the side project Coldseed . He also was the bass player of the progressive metal band Sieges Even , which he and his brother were founding members of , and played bass for power metal band Power Quest . In 2009 -- 2010 , he toured with Tarja Turunen . In 2011 , he released an EP called The Mirror of Silence with Pergana . He also joined Rhapsody of Fire as a permanent member following the departure of Patrice Guers until his departure in August 2014 . - Alessandro "Alex" Staropoli (born 9 January 1970 in Trieste, Italy) is a keyboard player, composer, leader and co-founder (with Luca Turilli) of the Italian symphonic power metal band Rhapsody of Fire. He does the orchestral arrangements in all the band's songs. Following the split with Turilli, Staropoli is Rhapsody of Fire's only remaining founding member. - Rhapsody of Fire (formerly known as Rhapsody) is an Italian symphonic power metal band created by Luca Turilli and Alex Staropoli, widely seen as a pioneer of the symphonic power metal subgenre. - Alex Holzwarth was born on 4 October 1968 in Landshut, Germany and is a professional drummer, former member of Italian symphonic power metal band Rhapsody of Fire. He is the brother of bass guitarist Oliver Holzwarth. - Blind Guardian is a German power metal band formed in the mid-1980s in Krefeld, West Germany. They are often credited as one of the seminal and most influential bands in the power metal and speed metal subgenres. Ten musicians have been a part of the band's line-up in its history, which has consisted of singer Hansi Kursch, guitarists Andre Olbrich and Marcus Siepen, and drummer Frederik Ehmke since 2005. - Andre Olbrich (born 3 May 1967, in Dusseldorf, Germany) is a German guitarist, composer and backing vocalist, most known as the co-founder and lead guitarist of power metal band Blind Guardian, in which he serves as one of the main composers with other co-founder Hansi Kursch. What entity does 'oliver holzwarth' has the relation 'occupation' with?
Answer:
bassist