Can I join the music box?
05AB1E, 15 14 bytes

’ïêo‡Åefa’7äåà


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’ïêo‡Åefa’        # dictionary string "soldosimilarefa" (using the words sold and similar)
          7ä      # split in 7 parts of almost-equal length (excess length goes to the first parts)
            å     # for each part, check if it’s in the input
             à    # maximum