My Song Switcher script can be useful for this (link in my signature) especially if your setup involves multiple tracks that must be switched for each song. It can be remotely controlled by MIDI, any web browser (eg. phone/tablet) or external software.
Making a midi controller button jump to a specific song can be done by assigning this short Lua snippet to the desired button:
Code:
local song = "Song title or number here (can be partial)"
reaper.defer(function() -- no undo point
reaper.SetExtState('cfillion_song_switcher', 'filter', song, false)
end)