Groove Agent sounds in my vocal track

I have cubase 8 Pro and a VST groove agent drum track created as an instrument track. When I record a vocal in an audio track I get the drum sounds playing in the audio track also! I have checked everything I can think of (routing, buss connections, effects) and it is still there. It is almost like the old bleed over we would get with the old tape recorders. Frustrating!

Help please. Thanks

Problem Solved. I installed a UR44 interface and it defaults to a loopback hardware setting. Once I discovered this no more extraneous tracks in the vocal track. Might be easier if it did not default to a setting for using it on live radio!