Born in Barcelona in 1980, Abel Tomàs Realp began his musical studies by studying piano with his father and violin with his uncle. He later studied with Zakhar Bron and Serguei Fatkouline at the Escuela Superior de Música Reina Sofía in Madrid, and with Viktor Tretjakov at the Hochschule für Musik in Cologne. His chamber music training has been deeply influenced by Walter Levin (LaSalle Quartet), Rainer Schmidt (Hagen Quartet), and György Kurtág.

As a soloist, he has performed with several orchestras, including the Barcelona Symphony Orchestra, the Vallès Symphony Orchestra, the Euskadi Symphony Orchestra, the Tenerife Symphony Orchestra, the Andorra National Classical Orchestra, the Franz Schubert Philharmonic Orchestra, and the SWR Stuttgart Symphony Orchestra, and with conductors such as James Judd, Junichi Hirokami, Víctor Pablo Pérez, Carlo Rizzi, Eliahu Inbal, Rubén Gimeno, Xavier Puig, Salvador Mas, Edmon Colomer, and Zubin Mehta, among others.

He has performed numerous violin and piano recitals with pianists Orly Shaham, Suguru Ito, Miri Yampolsky, Amir Katz, Eldar Nebolsin, Kennedy Moretti and Hyo Sun Lim. Since 2023 Abel Tomàs has formed a duo with pianist Emma Stratton.

At the age of 16, he became a founding member of the renowned Cuarteto Casals, a chamber ensemble with which he has maintained a very intense artistic activity since 1997 until the present, with concerts in the best European halls and tours in South America, the United States and Asia. Since 2004, the quartet has recorded exclusively for Harmonia Mundi, a record label with which it has made several recordings to date. The Cuarteto Casals has been awarded the 2006 National Music Award in Spain, the 2005 City of Barcelona Award and the 2016 National Culture Award of Catalonia.

In 2009, together with his brother Arnau Tomàs and the South Korean pianist Hyo-Sun Lim, they founded the Ludwig Trio. With this group, he has offered tours of Europe and South Korea, and has also recorded two CDs with the Aglae label.

In addition to his concert activity, Abel Tomàs has developed his pedagogical work as a professor of chamber music at the Escola Superior de Música de Catalunya (ESMUC) and has recently won the position as a professor of chamber music at the Hochschule für Musik und Theater in Hamburg (Germany). He also gives masterclasses as a guest professor at the Koninklijk Conservatorium in the Hague (Netherlands) and at the Scuola di Musica di Fiesole (Florence). He has been a guest professor at the ECMA (European Chamber Music Academy) and at ProQuartet (Paris).