Here's a great example of a popular trend in video covers: multiple parts are performed a cappella by a single vocalist who sings, beat boxes and emulates instruments such as pianos and guitar using vocal sounds as well. Here Mike Tompkins covers Ed Sheeran's 2017 hit "Shape Of You" with, in particular, inventive vocal percussion.
ALL VOCALS/BEATBOXING (Mike Tompkins):
Very professional video and accomplished vocal work by an experienced a cappella performer. Quality of singing, beatboxing and arrangement all excellent and going viral as well.