Need A Simple Sequencer, OS X Sequencer Options

[RobWall]

I'm a new member...Ten years ago, after getting a Roland JV-35, I purchased a package deal of a MIDI interface, BAND-IN-A-BOX, and an Opcode program called MusicShop. I used it with a Macintosh running System 7.1. The whole package cost less than $75. MusicShop was a baby version of Opcode's Vision program. It was a simple 16 track sequencer that let me record or import MIDI data and edit it any way I wished. It included a notation view as well as piano roll view.
Four months ago I got a Mac G5 running OS X 10.3. None of my old programs would recognize a USB port, so I have had to upgrade everything. I have a new Band-In-A-Box, and new Finale 2004. I have been unable to find a cheap, usable MIDI sequencer program that would do what MusicShop did. Opcode is now dead. I hate to pay for a Cadillac professional program when my needs are fairly simple. I just use the JV-35 as my only input device. I only use it for home or church use. I have downloaded a demo version of Master Tracks that comes close to what I need, but still doesn't do what MusicShop did.
Can someone advise me what is available that would meet my needs.
Thank you.

Thanks.

Bob