@bioinformagic

Considering that we are comparing elephants and mastodons here we would need to go a bit more in details before depicting how big such a concert would be.

Based off the data found on Wikipedia a male mastodon had a max height of 3.25m, where as Asian elephants average at 2.75m and African elephants max out at 4m.

Now if we say a toot is dependent on the trunk length and the normal character amount on other instances is 500, then that would convert to 131.07 elephants. Though this assumes that we are talking about African elephants who are the same height as Mastodons.

If we calculate the trunk to height ratio for the living species we get 0.6364 for Asian elephants (trunk: 1.75m) and 0.5334 for African elephants (trunk: 2.1336m). Multiplying this with the height of the Mastodon will give us 1.7336 for African elephants and 2.068 for Asian elephants. Finally we will multiply the elephants by the ratio of estimated Mastodon trunk length to exist trunk length and this gives us about 107 African elephants or 155 Asian elephants.

So to answer the unasked question of "how many elephants are in the concert?" the answer is either 107 African elephants or 155 Asian elephants.

@SteveZissou