Mick asked the question in the Irish Tune thread. What is out there to write out and play a tune.
I use MusicTime. My brother uses Cakewalk.
Musictime will turn MIDIs into sheet music and vice versa. You can enter music with the cursor as notes on staves or play it on a keyboard. You can change the time sig, transpose, speed it up and slow it down. When I bought it, it cost about $50 US, but I bet it's more now. My version, 1., has some quirky bugs. Like it gets the measure number wrong, and won't change it. Makes it hard to add or delete measures.

I know there's more. What do you use, what does it do, cost, and why do you like or dislike it?
Blessings,
Barbara