Solo (magazine) definition

(1) Composed or performed by a single voice or instrument

"A passage for solo clarinet"

(2) Without anybody else

"The child stayed home alone"

"He flew solo"

(3) A flight in which the aircraft pilot is unaccompanied

(4) Any activity that is performed alone without assistance

(5) A musical composition for one voice or instrument (with or without accompaniment)

(6) Perform a piece written for a single instrument

(7) Fly alone, without a co-pilot or passengers