4Mbones was born in the summer of 2002 as a result of its membersī uneasiness to create a classic chamber music group which embraced the musical repertory of the instrument they came to love: The trombone.

 The musical repertory of this instrument has a wide range of posibilities, renaissance, classic, romantic, modern, jazz, contemporary, etc... Trying to embrace more disparate styles rather than limitating to a specific period. 

Its members also count on an educational background to show in all its splendor the interpretative faculties of this marvellous instrument.

At the same time, its four members are specialised in a second instrument besides the tenor trombone, some of which have been  present in several ocasions in their concerts, instruments such as euphonium and high trombone, widening the repertory the quartet can reach.