It was an epic drum solo by Grog the caveman back in the year 1bc
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The solo instrument is a violin.
An instrument solo in a band is when every one else is quiet but the one instrument that has the solo.
When played well, oboe is a very beautiful instrument. It is unique and interesting to play and a good solo instrument.
Unaccompanied is a solo ... like one instrument being played alone. Accompanied is in combination with another instrument that compliments the solo line or music.
concerto
The tune Greensleeves can be played by a myriad of instruments. It can be played by a group or on a solo instrument. It can even be sung.
No. A virtuoso is a performer who is exceptionally good at their instrument; it can be a noun (Ritchie Blackmore is a guitar virtuoso) or an adjective (Ritchie Blackmore put in a virtuoso performance). A solo is a part of a song played by one instrument or sung by one voice (guitar solo). However, you can have a virtuoso solo.
solo
Sitar is a stringed musical instrument that can be played solo or as an accompaniment to Hindustani Classical Music
There is no solo instrument; a brass band plays briefly.
The piano, when not used as a solo instrument, could be part of the percussion section of an orchestra, as the instrument functions as a percussion instrument.