unaccompanied

unaccompanied /ˌʌnəˈkʌmpənid/ adjective
unaccompanied
/ˌʌnəˈkʌmpənid/
adjective
Britannica Dictionary definition of UNACCOMPANIED
1 
a  : without another person : alone
b  : not together with something specified
2 
music : played or sung without another musical instrument or singer