From 2011 to 2018 he was choir and orchestra conductor and teacher for music theory at the free Waldorfschule [de] in Halle.
His approximately 170 works (published by Schott Music and Verlag Neue Musik in Berlin) have been performed in 16 European countries, Japan and the USA.
Buchholz gave workshops on new music in Ufa, Yerevan, Bern, Brno, Vilnius, Riga, Prague and St. Petersburg.
His orchestral music includes several major works, including Wintermusik I (2004), Die Stadt (2006), Tod des Odysseus nach einem Text von Heiner Müller (2009), Fraktale (2010), The Young Person's Guide to New Music (2010), Klingelfranz (2011) and Gegen-Impuls (2013).
The major choral cycles include Orplid (1998), Armenia clamans (1999), Letare Germania (2006), Luther-Arkaden (2008), Novalis Madrigal (2010) and Nongenti (2015/16).
Buchholz combines contemporary compositional techniques with tonal cells into a unity in which he breaks through classical settings as well as complex avant-garde structures.
Examples are Les dances imaginaire for two orchestras (2008) and Armenian Hymns for alto solo, 2 oboes and choir (2013).
The chamber music comprises about 70 works, including cyclical compositions such as domino per due pianoforti (1992), Trois Airs Baroques (1998/99), Fourteen States to Bach (1999), RICERCAR and CHORAL (1999/2000), UNDEUTschLICHt - eleven caricatures for two harps (2003), KRUNK for string quartet (2005) and Tetraktys (2009).