SVQ is a proprietary file format used by Roland, a manufacturer of digital music instruments, to record MIDI sequences. Although the equipment can usually convert the file to a standard MIDI format internally, users who do not own the proper equipment might find themselves struggling with an unreadable SVQ file that they downloaded or were given by a friend. Although not many programs can read SVQ, there are software packages available that can convert them.
Download and install Awave Studio from http://www.fmjsoft.com/awavestudio.html (see Resources). This program is free on a trial basis, but you must purchase it if you want to use it past a certain date. The program also supports a long list of other obscure or proprietary file formats.
Open the SVQ file in Awave Studio.
Save the file as a MIDI. Note that the program will not correctly convert instrument data; you may end up with a MIDI file with nothing but classical piano.
Edit the instruments to match the original SVQ file, and save the file again.