What were the instruments used? What is the lowest note sounded? In the US, hum is 60 Hz or multiples thereof and often the 120 Hz harmonic is greater than the fundamental. A steep HPF just below the lowest note played will clean up hum. For example, a guitar goes down to about 80 Hz so a 48 dB/octave HPF @ 80 Hz will get rid of quite a bit of 60 Hz hum. Sometimes I'll vary the HPF cutoff frequency within a song depending on what notes are being played. In that case I'll copy the track, HPF one @ 80 Hz and the other at maybe 150 Hz and cross fade between the two tracks as needed.
Most DAWs have a spectrum analyzer so it may be helpful to analyze the quiet part (i.e., nobody is playing) to see where the hum peaks are. If there are significant peaks at 180 Hz and above, you may have to use some notch filters to get rid of them since a simple HPF may cut out too much music.