There is always an alternative. You can find and
download free backing tracks - it is not a problem. Among them sometimes you come across quite good but in most cases the quality of phonograms are some that leave a lot to be desired.
You can
order the original backing tracks - but it is a serious investment, which is not always necessary.
And you can buy very inexpensive high-quality
professional backing tracks that are made for violinist by himself competently. Your solo instrument not "will sink" in the congested arrangement. All backing tracks have been tested in real work. These
instrumental backing tracks fit not only for the violin but for the guitar and many other instruments.