$ sudo apt install musescore Reading package lists... Done Building dependency tree Reading state information... Done Starting pkgProblemResolver with broken count: 1 Starting 2 pkgProblemResolver with broken count: 1 Investigating (0) musescore [ amd64 ] < none -> 2.0.2+dfsg-2ubuntu0.1 > ( universe/sound ) Broken musescore:amd64 Depends on libportaudio2 [ amd64 ] < none -> 19+svn20140130-1build1 > ( libs ) (>= 19+svn20101113) Considering libportaudio2:amd64 0 as a solution to musescore:amd64 9999 Re-Instated libportaudio2:amd64 Broken musescore:amd64 Depends on qtbase-abi-5-5-1 [ amd64 ] < none -> > ( none ) Considering libqt5core5a:amd64 4053 as a solution to musescore:amd64 9999 Considering libqt5core5a:amd64 4053 as a solution to musescore:amd64 9999 Broken musescore:amd64 Depends on musescore-common [ amd64 ] < none -> 2.0.2+dfsg-2ubuntu0.1 > ( universe/sound ) (>= 2.0) Considering musescore-common:amd64 0 as a solution to musescore:amd64 9999 Re-Instated musescore-common:amd64 Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: musescore : Depends: qtbase-abi-5-5-1 E: Unable to correct problems, you have held broken packages.