Purchased Magix music maker early April, got premium as was on sale (£69.99). I am currently working on my first solo album, and have encountered many flaws, some more personal, but one very limiting issue exists for me indeed, (lack of time sig variety and inability to change tempo halfway through a song, which seems like a fundamental function of a music software, in particular one priced at over £100), but mainly, one which, as you can imagine, has caused me much stress and frustration. I record my guitar (audio rec), which doesn't ever get deleted, and then using my MIDI keyboard, drums, bass, keys etc. I will then save this work and come back to work on this song another time, only to find that over half of my MIDI recordings have spontaneously deleted themselves, without me having actually used this software in between producing/recording/mixing. Recently, a bassline has started doing chromatic shifts (recorded in Dminor and using D F G A Bb C E, and now this bassline won't play low D, and every note now does some kind of chromatic slide (F to F# in one note for example). Needless to say, as I am trying to work on an album, all by myself, I am not enjoying this software so far, and am considering getting a refund or just getting another software, which I can't afford but oh well, as these problems are fairly incapacitating for me musically/productively. I am using Magix Music Maker premium version 28.0.2.47. Any help or advice is greatly appreciated, thanks. (I am using a Windows 7 computer)