Worship can be a supernatural experience. I think it is possible in the spiritual realm that our voices and those of angels are joined together as we worship the Lord. It could be that worship is the intersection between two realms and we and/or God are somehow transported into each others’ presence as we sing praises and lift our voices to heaven.
During the dedication of Solomon’s temple, when the ark was brought into the most holy place, it says in 2 Chronicles 5:13:
It came even to pass, as the trumpeters and singers were as one, to make one sound to be heard in praising and thanking the LORD; and when they lift up their voice with the trumpets and cymbals and instruments of musick, and praised the LORD, saying, For he is good; for his mercy endureth for ever: that then the house was filled with a cloud, even the house of the LORD.
The reference to “singers were as one” and “to make one sound” implies that the priests were performing in perfect unison. What is not stated, but could also be true is that the natural and supernatural were also as one, which is why the house was filled with a cloud indicating the presence of God.
Many times as I have been worshipping at church, I have felt the presence of God enter the sanctuary. Although God’s heavenly host is invisible, and typically imperceptible, I’m sure they accompany him wherever he goes, uniting the two realms in which he exists.