ɪɾ ɪz tɹˈuː æz ɐ dʒˈɛnɚɹəl ɹˈuːl ðæt ˈoʊldɚ ænd bˈɛtɚnˈoʊn sˈɔŋz tˈɛnd tʊ ˈɑːkjʊpˌaɪ lˈoʊ nˈʌmbɚz, wˌaɪl sˈɔŋz wˌɪtʃ ɑːɹ əbskjˈʊɹ hæv hˈaɪɚ nˈʌmbɚz.
it is true as a general rule that older and better-known songs tend to occupy low numbers, while songs which are obscure have higher numbers.