As a five-year-old she began learning piano and, since the age of six, she has played the cello in the class of Daniela Cherpokova-Nikolaeva at the Lybomir Pipkov National School of Music in Sofia (Bulgaria). Since September 2013, she is a student of prof. Stefan Popov in Guildhall School of Music and Drama (London). Penka has been a scholarship student of bothRaina Kabaivanska Foundation for gifted children, Communitas Foundation for exceptional achievements and skills and Yordan Kamdzhalov Music Trust. 

She is a First Prize winner at the international competitions “Young Virtuosos” (2005 - 2010) in Sofia and “M.A.G.I.C.” (2007 and 2011) in Bourgas.In January 2012 together with her piano trio “Appassionato” won at the European Radio Competition “Concertino Praga – 2012”: the First Prize in a category “Trio” (chamber music), the special prize of the Czech Radio – “Helena Karaskova” and the prize of EMCY. In June the overall winners took part in the concert of Laureates in the “Dvorak” Hall (Rudolfinum) and at the concerts of Prize winners of South Bohemian Festival “Concertino Praga”. In July the trio recorded their programme in the Czech Radio which published their profile CD in November (2012). The trio performed solo recitals in Luxembourg and Germany at the invitation of EMCY (The European Union of Music Competitions for Youth) in March 2013. In April 2012 Penka won the Second Prize at the international competition for cellists “Karl Davidov” in Kuldiga, Latvia. In November 2013 she received the Third prize at the III M. Elsky International Contest of String Bow instruments performers in Minsk (Belarus). She refines her skills in the master classes of JérômePernoo, Prof. Vladimir Perlin, Mats Lidstrom, Dominique de Williencourt, Gavriel Lipkind , Seeli Toivio, Martin Zeller, “Talich” String Quartet, Prof. Grigory Feyghin, Elena Ashkenazy, Prof. Kevork Mardirossian, Alexander Zemcov,etc. In the period 2010-2012 she has also appeared at the International Chamber Music and Orchestra Course “Musica Mundi” (Belgium) and in the 10th International Summer course for chamber music “Hindemith” in Blonay (Switzerland).

Penka Petkova has performed as soloist of “Classic FM” Radio Orchestra, New Symphony Orchestra, the philharmonic orchestras of Plovdiv, Pleven and Vratsa (Bulgaria); “Liepaja” Latvian philharmonic orchestra and the Belarusian State Philharmonic.

In 2011 and 2012 she was awarded a Diploma for artistic achievement by the Minister of Culture of the Republic of Bulgaria.

Penka has solo and chamber music recordings made for the Czech radio, Bulgarian National TV, Bulgarian National Radio and other broadcasting.

Penka has been teaching students of all ages, including very young children for over 5 years achieving very good results with her pupils.