Is it possible your friend added the reverberation after the recording and could send a dry version? People often do because it "sounds better", but then it can hard to handle in the mix, particularly if the reverb characteristics are different between vocal and the instrumentation.

Another name for the reverberation removal process is deconvolution, which may be a search help.
If it really is room reverb, blankets hung across the room and/or around the singer+mic can help.


Jazz relative beginner, starting at a much older age than was helpful.
AVL:MXE Linux; Windows 11
BIAB2025 Audiophile, a bunch of other software.
Kawai MP6, Ui24R, Focusrite Saffire Pro40 and Scarletts
.