I need a count of each track sold in an album then display all album names and it's corresponding track name that has max count in sql

Question

sales table shows how many of each track is sold. I need to count of each track sold album table shows album names common field is trackid I need album name, only track title that's sold max in that album and count of that track sold.

select al.title as album, t.name as track, max(s.sales)
from tracks t, albums al, 
    (select al.title as album, count(i.trackid) as sales 
    from albums al, tracks t, invoice_items i
    where t.trackid = i.trackid and t.albumid = al.albumid
    group by album)s
where t.albumid = al.AlbumId;